Tosun enjoyed a successful spell with Besiktas between 2014 and 2018.
Tosun is yet to score for Everton this campaign after falling down the pecking order under Carlo Ancelotti.
Nuno praised Wolves' game management but admits they were "sloppy" in their 1-0 win over Besiktas.
Man Utd produced a solid away performance but their problems with creating chances and scoring goals continue.
Willy Boly scored in the 90th minute to secure all three points for Wolves in a huge away win for Wolves in Turkey.
Liverpool could reportedly make a last-minute bid to land a Besiktas midfielder before the deadline.
Loris Karius reportedly wants to end his two-year loan deal at Besiktas early and return to Liverpool.
Liverpool goalkeeper Loris Karius will sue loan club Besiktas over unpaid wages, according to reports.
Besiktas want to sign Liverpool's Loris Karius on a permanent transfer, says the Turkish club's president.
Reports have emerged in recent days suggesting the Turkish club were looking to end the loan in January.
Liverpool's Loris Karius has dismissed rumours that he will return from his loan deal at Besiktas early.
Loris Karius is reportedly close to moving to Turkey for a couple of seasons...
Man Utd were said to have made an approach for Anderson Talisca. Well, it's b*llocks, apparently.
Bayern Munich brushed aside Besiktas to move into the Champions League quarter-finals.
Thomas Muller and Robert Lewandowski scored two each as Bayern Munich thrashed Besiktas.
Arda Turan will see out the remaining two and a half years of his Barca contract at Istanbul Basaksehir.
Everton still want Cenk Tosun. Cenk Tosun still wants Everton. But Besiktas want more money.
Big Sam is desperate for a centre-forward and a deal has reportedly been agreed to grant him his wish...
That's according to one report, with United said to be keen to cash in before Fellaini becomes a free agent
Besiktas and the Turkish FA have condemned the terrorists who apparently targeted police
Besiktas manager Senol Gunes is not interested in signing Aleksandar Kolarov and Mario Balotelli.
Besiktas are back on the trail of Liverpool outcast Mario Balotelli, according to reports.
There have been no discussions between Besiktas and Mario Balotelli, according to the striker's agent.
Raiola's confidence of placing Mario Balotelli at Besiktas appears horribly misplaced. Try another sucker, Mino.
West Ham manager Slaven Bilic has confirmed interest in Atiba Hutchinson and Gokhan Tore
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