Osmanlispor have rejected a bid from West Ham for Bodou N'Diaye, meaning Everton will now step up their pursuit.
Fenerbahce may be forced to sell Martin Skrtel this summer - and joining up with his former Liverpool manager Brendan Rodgers at Celtic may appeal.
Newcastle United wanted Vincent Aboubakar in 2014 - and it appears thy could get their man at last by muscling in on Besiktas' deal.
Crystal Palace, Everton and West Ham have all been linked with Osmanlispor midfielder Badou Ndiaye following his fine Europa League displays.
Celtic manager Brendan Rodgers reportedly tried to sign Hasan Ali Kaldirim last summer and in January - but it is unlikely that it will be third time lucky.
Everton decided against signing Enner Valencia on a permanent basis from West Ham after a disappointing loan spell at Goodison Park.
Volkan Sen has endured a turbulent two years at Fenerbahce and could be offered a route to the Premier League by Crystal Palace.
Everton appear desperate to get rid of Oumar Niasse - but are they asking for too much money for the former Hull City loanee?
Sunderland are struggling to find a buyer for the exiled Jeremain Lens despite a stand-out loan spell at Fenerbahce in the Turkish Super Lig.
The former Lorient man, who signed for Cardiff in 2014, is out of contract at the end of this season.
The former Netherlands star is a legend for both Liverpool and Fenerbahce, and was happy to welcome the ex Arsenal and Manchester United striker to his old club.
Manchester United boss David Moyes is reportedly lining up a move or Turkish international goalkeeper Onur Kivrak, who currently plays for Trabzonspor.