Alex Oxlade-Chamberlain will miss the "vast majority" of the forthcoming season as the Liverpool and England midfielder focuses on rehabilitation from a serious knee injury.
The 24-year-old sustained multiple ligament damage during the first leg of the Reds' Champions League semi-final triumph over Roma in April.
Oxlade-Chamberlain was set to play a key role in the final weeks of Liverpool's campaign, which concluded with defeat in the final of the same competition, and England's trip to the 2018 World Cup.
Surgery eight days after the Roma match was a success and manager Jurgen Klopp explained it was a matter of waiting until the time was right before disclosing the severity of the midfielder's condition.
"It feels like now is an appropriate time to tell people that for Ox this coming season will be about focusing on recovery and rehab," he told the club's official website.
"We have known this from pretty much the day after he got the injury and after the successful surgery, we were sure of it. I hope everyone treats this information responsibly.
"There has been no change, no setback – it's exactly on the schedule we expected and planned for. The new information is that we're now giving more detail publicly."
Oxlade-Chamberlain joined Liverpool from Arsenal on transfer deadline day last August for a reported £35million fee and hit a rich vein of form after the turn of the year.
He scored five times in all competitions, including a superb long-range strike in the Champions League quarter-final win over Manchester City.
"It is typical of Ox that he didn't want the news to overshadow the end of the season and, to be quite honest, we thought we could wait and tell people at an appropriate time," Klopp added.
"His surgery – which he had on the day of our second leg in Roma – has been completely successful and his recovery has started superbly well.
"But the truth of the matter is that we are preparing this season knowing he will not be with us on the pitch for competitive matches for the majority of it. If we do see him back this season it will be a bonus."
Liverpool have already bolstered their midfield during the close season, with Naby Keita completing his pre-arranged switch from RB Leipzig and Fabinho arriving from Monaco.
Switzerland international Xherdan Shaqiri, who joined from Stoke City last week, provides an additional wide attacking option – another of the roles Oxlade-Chamberlain previously filled.
Klopp's men open their Premier League campaign against West Ham on August 12.
19 de octubre 2018
|Lorenzo out of Japanese MotoGP|
|Real Madrid handed Africa trip in Copa del Rey|
|Allegri: Ronaldo has sharpened Juventus focus|
|No Wade in Wasps squad amid NFL reports|
|Rooney: Five of us controlled Man United dressing room|
|Bayern bosses launch scathing attack on ´disrespectful´ media|
|Saints lock in Lawes to new deal|
|Adelaide United 1 Sydney 1: Debutant Le Fondre rescues a point|
|Madrid can´t look back, only forward - Lopetegui confident of revival|
|Wimbledon to introduce final-set tie-breaks|
|Abbas inspires Pakistan to series victory|
|Madrid boss Lopetegui hopeful on Bale availability|
|Mood is positive at Bayern, insists under-pressure Kovac|
|LeBron offers food for thought after losing Lakers debut|
|Bolt future not an immediate concern for Mariners|
|Hazard: I could finish my career at Chelsea|
|Buffon hoping to avoid Champions League final against Juventus|
|Wilshere not ready for West Ham return|
|Chelsea v Manchester United: Hazard better under Sarri than he ever was with Mourinho|
|The big Friday Premier League quiz|
|Khawaja suffers meniscal tear, doubt for India series|
|Babbel: Klopp must win trophies now at Liverpool|
|LeBron makes spectacular start on Lakers debut, but LA fall to Trail Blazers|
|Broncos thrash Cardinals to end losing streak|
|Price leads Red Sox past Astros and into World Series|
|LeBron makes fast start on Lakers debut with two massive dunks|
|Real Salt Lake 4 New England Revolution 1: Hosts boost play-off chances|
|Simmons gets triple-double in win over Bulls|
|´Ambitious´ Maguire wants Champions League football|
|Henry praises ´charismatic leader´ Falcao|
|WATCH: Cardinals WR Fitzgerald tackles former QB Warner on sidelines|
|Spurs right not to make signings – Pochettino|
|Icardi happy at Inter, close to contract renewal|
|This Week in U.S. Sports: Bosa leaves Ohio State while the World Series is almost set|
|Liverpool boost as Salah and Van Dijk join training|
|Cowboys discuss road woes, Prescott says team ´addressed the elephant in the room´|
|Isner scrapes through in Stockholm, Monfils eliminates Tsonga|
18 de octubre 2018
|Hinch says Altuve would be out with injury in regular season|
|WATCH: Schwarzenegger tells LeBron to make Lakers great again|
|LeBron tells Lakers coach Walton: I´m always fresh!|
|Mayweather should come back to fight me - Alvarez|
|Goerges battles past Vekic, Kasatkina wins all-Russian tie|
|Ask 32,000 Gibraltarians if the Nations League is meaningless - Styche|
|They´re going to speak about it for years - Azhar reflects on comical run out|
|Garcia in the mix as weather hits Andalucia Valderrama Masters|
|From lacking a ´football brain´ to signing a new contract – the Mourinho-Shaw saga|
|Alonso teases Indy 500 return as Hamilton reveals NASCAR temptation|
|Guptill ruled out of Black Caps´ UAE tour|
|UEFA investigating PSG-Red Star fan clashes|
|Just ´another weekend´ for champion-elect Hamilton|
|G League will offer $125K to top prospects in lieu of NCAA one-and-done route|
|Chargers defensive end Bosa ´a few weeks´ away from return, says father|
|Bale back in full Real Madrid training|
|Roma supporter found not guilty of inflicting GBH on Liverpool fan Sean Cox|
|´Fantastic´ Neuer will prove he´s still the best, says Lloris|
|Perez secures Force India stay|
|Australia wait on Khawaja scan|
|Shaw signs Manchester United extension|
|Jones lays down challenge to snubbed England star Cipriani|
|West Ham´s Pellegrini rejects Dzeko speculation|
|Emery fails to assure Ramsey of Arsenal future|
|Pakistan on course for victory after Babar 99 and farcical run out|
|Canelo ready to leave comfort zone to face Fielding|
|Eriksen ready for Tottenham return, Pochettino confirms|
|Titans coach rocked by Hurrell´s Rhinos switch|
|Rubin Kazan suspended from UEFA competition for FFP breach|
|Real Madrid could sack Lopetegui if results don´t improve, says Essien|
|On-court coaching would add to drama - Mouratoglou|
|Babbel lauds ´top class´ Ronaldo after Juventus switch|
|Carmelo Anthony: Rockets bench role challenging mentally|