Virgil van Dijk claims he knows nothing of interest from English clubs and is keen to prove himself in the Champions League with Celtic.
QPR loanee Tom Carroll wants to "make it at Tottenham" but is prepared to consider all of his options at the end of the season.
Doncaster manager Dean Saunders concedes El-Hadji Diouf has almost certainly played his last game for the club.
Diouf penned an 18-month deal at the Keepmoat Stadium in January, but clauses in the contract mean the 31-year-old Senegal international is no longer bound to Rovers following their relegation from the Championship.
Saunders stated Diouf - strongly linked with a move to Yorkshire neighbours Leeds last week - was "difficult" to manage but praised his contribution to the club and his forward partnership with Billy Sharp before the latter completed a mid-season move to Southampton.
"He scored six goals, got 12 assists and I think probably six of those were on Billy's head in the six-yard box. Obviously Billy's got a knack of finding space in the box.
"He's a class player, not easy to manage off the pitch, but I only had him for five months and the clauses in his contract are for the Championship, so I think he'll probably be going to another club, whether it's Leeds or somewhere else."