Blackburn Rovers, Leeds United, Fulham, Hearts, Real Madrid, Newcastle and Birmingham City feature.
The winger is out of contract in the summer and Mark Warburton has expressed a desire to bring him to Ibrox.
The Bulgarian is on his way out of the City Ground.
The Lithuanian international has been without a club since August.
The former hit prospect has had trouble with injuries throughout his career.
The former Hearts player is available for nothing after leaving Houston Dynamo.
Celtic striker Anthony Stokes has urged Ann Budge to mind her own business.
As Hearts' financial situation deteriorates, are fans once again the answer to saving football clubs?
Danny Wilson's prospective move to Hearts has been struck by the complete collapse of the clubs finances this week.