Belgium star and Dutch left-back could join, plus latest twist in the Berbatov saga
The 25-year-old is valued at £6.5million by his club, a figure which has already seemingly put off Aston Villa, but Rene Meulensteen is said to be hoping a short-term agreement with an option to buy in the summer could see Defour at Craven Cottage.
The former Standard Liege man has 41 caps for Belgium and joined the Portuguese giants in 2011.
His arrival could see Meulensteen cool his interest in Ravel Morrison, as West Ham are clearly reluctant to sell the youngster.
The Dutch defender is yet to enjoy a regular run in the first team at Old Trafford and could welcome the opportunity to link up with former United coach Meulensteen once again.
Buttner joined United for £4.4million in summer of 2012 from Vitesse Arnhem and has shown glimpses of Premier League quality in his rare appearances for United.
But with David Moyes still preferring to play veteran Patrice Evra ahead of him, and United constantly being linked with signing a new left-back, the 24-year-old could move on.
With John Arne Riise now 33, Fulham need a younger model to replace him and Buttner could be an interesting option.
The latest twist in the Dimitar Berbatov saga is that Tottenham Hotspur could try and bring him back to White Hart Lane, according to the Telegraph.
The Bulgarian striker is out of contract at the end of the season, but Daniel Levy is apparently willing to pay £1.5million for his services, despite the fact manager Tim Sherwood is happy with his striking options.
Emmanuel Adebayor has been on fire for Spurs in recent weeks but Jermain Defoe is leaving for MLS at the end of February and Roberto Soldado still only has one league goal from open play this season.
Berbatov spent two years at Spurs from 2006-2008 before joining Manchester United in a £30.75million deal.
He scored 46 goals in 102 matches for the North London club and a return could appeal to the veteran forward, although Fulham will be extremely reluctant to sell without an alternative striker in place.
Another player being linked with a move away from Craven Cottage is youngster Muamer Tankovic.
According to Ladbrokes News, Liverpool have joined Arsenal and Spurs in the race to lure the 18-year-old from West London.
Meulensteen handed the young Swede his debut in the recent FA Cup replay victory over Norwich City and rates him highly.
However, the attacking midfielder’s contract runs out in the summer and Fulham will need to tie him down soon if they want to fend off the circling vultures.
The Fulham boss is expecting Steve Sidwell to stay at the club, according to Sky Sports.
The veteran midfielder has been on top form recently, scoring five Premier League goals, but failed to agree a contract extension in October.
But Meulensteen said: “It's clear that Steve would love to stay here. He's doing very well here so I hope we come to a suitable solution.
"He will definitely get the credit he deserves from us. His fellow team-mates respect him, as do the staff, for the tremendous job he does for us.”
Meanwhile, Evian have joined Watford in the race to sign Derek Boateng on loan, according to L’Equipe.
The Ghana midfielder is desperate to play regularly ahead of the World Cup.
Finally, the Independent claim that Fulham will be turned away again if they make an improved offer for Leicester City defender Liam Moore.
The club have already reportedly been rebuffed after offering £2.2million.
image: © Steindy