Liverpool captain Steven Gerrard could play at centre-back later in his career, according to manager Brendan Rodgers.
Gerrard, 33, is nearing the end of his career and has developed into a deep-lying midfielder, making fewer forward runs.
Rodgers believes Gerrard's passing would make him a good central defender, but the Northern Irishman said the England international needed to stay fit.
"I think in terms of Steven, it (retirement) will be determined by his fitness," Rodgers said.
"He'll be 34 by the end of this season, and I look at his fitness and I look at him playing and I think that he's as fit as he's ever been. He's looking after himself.
"Of course that player that he was maybe 10 years ago, being dynamic, making those long-bursting runs forward - of course that goes out of your game.
"I think he can play as a number two centre-half later in his career.
"When you're playing against certain teams and you go one up, he can play as a right-sided centre-half, build from behind, the way he passes the ball is as good as anyone in the world."
Rodgers' Liverpool side, who are second in the English Premier League, travel to KC Stadium to face Hull on Sunday.
He expects a difficult encounter against Steve Bruce's side, but said his team were confident of collecting three points.
"They look on course to be a team in the middle of the table. So that will tell you that it's going to be a very difficult game for us," Rodgers said.
"But our confidence is high and our spirit is very strong at the moment so even though it will be tough we hope we can go and get the points."
|27||Ahmed El Mohamady|
|Coach: S. Bruce|
for R. Koren 66'
for Y. Sagbo 90'
for R. Brady 90+2'
|Montreal Impact v America: Canadians draft in goalkeeper|
|Rakitic: Barca targeting treble|
|Australia´s Franjic quits Torpedo Moscow over unpaid wages|
|Kagawa: Dortmund owe Klopp a trophy|
|Zabaleta: Pellegrini deserves more respect|
|Liverpool will challenge next season - Rodgers|
|´Eternal pessimist´ Howe applauds Bournemouth´s impending promotion|
|Moreirense 1 Sporting Lisbon 4: Montero double keeps title hopes alive|
|Bournemouth 3 Bolton Wanderers 0: Howe´s men on the verge of the Premier League|
|Valencia 4 Granada 0: Hosts resume fourth place with thrashing|
|Turkish Super Lig Review: Besiktas back on top as Fenerbahce slip|
|Denis hit with five-game ban for dressing-room attack|
|Arabian Gulf League Review: Ajman relegated, Al Jazira close in on second|
|Zanetti: Icardi close to signing new deal|
|Pfaff hails Neuer´s consistency|
|Blanc: PSG can cope with physical demands|
|Bruce: Premier League must act on ticketing prices|
|Milan v Genoa: Off-field problems dominate build-up for Inzaghi´s men|
|Juventus v Fiorentina: Champions seek derby reaction with title in sight|
|Arminia Bielefeld v Wolfsburg: Hecking´s men in last-chance saloon|
|Real Madrid v Almeria: Rodriguez vows to fight until the end|
|Klopp ´an option´ to replace Guardiola at Bayern|
|Home form crucial for Premier League survival, says Bruce|
|Leicester City v Chelsea: Mourinho backs Pearson´s men to survive|
|Villarreal v Atletico Madrid: Marcelino´s men bidding to end winless run|
|Bundesliga title a footnote in Bayern´s grand plans|
|Robben back as Guardiola calls for focus|
|Mancini: Be patient with Shaqiri, Podolski|
|Klopp shrugs off Gundogan speculation|
|Run-in does not favour Barca - Luis Enrique|
|Mourinho takes further swipe at ´boring´ claims|
|Watford must spend smart, says Hyde|
|Allegri saddened by derby crowd trouble|
|Thompson ´mortified´ after throwing pole into team-mate´s leg|
|Hernandez not concerning himself with future|
|Stranzl to play no further part in Gladbach season|
|Rodgers keen to address lack of goals|
|Giroud cannot fire Arsenal to title - Henry|
|Do not destroy Sterling, says Campbell|
|Fournier: Lyon still dreaming|
|United performance Stones´ best - Martinez|
|Carver: Abuse from fans unacceptable|
|No shame in second place - Pellegrini|
|Humble Hazard thrilled with PFA honour|
|La Liga Preview: Real continue Barca pursuit against Almeria|
|Serie A Preview: Roma eye much-needed win|
|MLS Review: Toronto end drought, Red Bulls stay unbeaten|
|Chelsea to face Sydney in June|
|Liverpool can attract players - Rodgers|
|Bayern celebrate three-peat|
|Hernandez form forces Ancelotti´s hand|
|Hazard crowned PFA Players´ Player of the Year|
|Weidenfeller ruled out of Dortmund-Bayern semi-final|
|Weidenfeller ruled out of Dortmund-Bayern semi-final|
|Ligue 1 Review: Lens´ fate all but sealed, Lyon return top|
|La Liga Review: Hernandez rescues Real, Sevilla up to fourth|
|Paris Saint-Germain v Metz: Injuries prove a frustration for Blanc|
|Serie A Review: Juve made to wait as Parma fight another day|
|Celta Vigo 2 Real Madrid 4: Hernandez to the rescue again|
|Barcelona v Getafe: Iniesta keen to maintain momentum|
|Milan players in ´retreat´|
|United have opened the door for Liverpool - Van Gaal|
|Mourinho hits back at Arsenal fans´ ´boring´ jibes|
|Juve were own worst enemy in derby defeat – Allegri|
|Bundesliga Review: Gladbach victory ends title race|
|Udinese v Inter: Mancini braced for crucial week|
|Primeira Liga Review: O Classico tie leaves Benfica on the brink|
|Bayern Munich v Borussia Dortmund: Klopp prepares for final Klassiker|
|Russian Premier League Review: Zenit edge closer to glory, Amkar Perm off the bottom|
|Arsenal played with handbrake on - Wenger|
|Mourinho swerves Oscar discussion to hail Terry display|
|Bayern´s title confirmed as Wolfsburg stumble at Gladbach|
|Eredivise Review: Late leveller see Ajax secure Champions League berth|
|Arsenal 0 Chelsea 0: Oscar decision in the spotlight after stalemate|
|Van Gaal bemoans lack of fighting spirit|
|Van Gaal: United to assess Rooney injury|
|Torino 2 Juventus 1: First derby defeat since 1995 puts title celebrations on hold|
|Martinez hails Everton´s ´incredible mentality´ after beating United|
|Everton 3 Manchester United 0: Martinez outwits Van Gaal in comprehensive win|
|Dundee United 0 Celtic 3: Griffiths´ hat-trick edges champions closer to title|
|Alderweireld reveals he has broken shoulder bone|
|Hull City v Liverpool: Lovren expecting another test of patience|
|Leverkusen dealt Papadopoulos blow|
|Five in a row for Champions League winners Auckland|
|Vermaelen cleared to play in Barca run-in|
|Hughes buoyed by Odemwingie return|
|Allardyce hails Adrian heroics|
|Villa confident of staying up - Sherwood|
|Zorc rejects talk of Gundogan departure|
|´Happy´ Hazard rejects talk of Chelsea exit|
|A-League Review: Victory claim Premiers´ Plate|
|Pochettino hoping to strengthen|
|Pjanic critical of Roma spirit|
|Rodgers: No room for error now|
|MLS Review: Revolution win big as Dynamo, Kansas City draw|
|Garcia rues sloppy build-up play|
|Jokanovic eyes title for Watford|
|Blanc: PSG have moved on|
|Hazard worth ´£100m each leg´ - Mourinho|
|Ferguson: United boss can break my trophy record|
|Levante leap clear of La Liga drop zone|
|Primeira Liga Review: Gil Vicente claim vital win, Estoril and Rio Ave held|