Borussia Dortmund, Marseille, Monaco and Sevilla on Sunday watched Nigeria forward Henry Onyekuru during the Istanbul derby between Fenerbahce and Galatasaray.
Onyekuru, 21, is currently on loan with Galatasaray from English Premier League club Chelsea until the end of the season.
The versatile forward scored Galatasaray’s only goal during the 1-1 draw against Fenerbahce last Sunday and Turkish website Fotomac report say he impressed the suitors with his performance.
The goal was his 12th of the campaign for Galatasaray and the Turkish champions have now closed the gap to five points with leaders Istanbul Basaksehir going into the final games of the season.
He spent last season on loan at Anderlecht where his season was caught by injury.
The former KAS Eupen striker has been linked with a move to a number of clubs during his loan spell with Galatasaray, including German giants Bayern Munich.
However, Everton reportedly value him in the region of €40m following recent claims in the Turkish press, which is likely to put off at least some of the interested clubs.
As long as a work permit can be secured then a season actually playing for Everton would appear to make the most sense.
The forward is expected to be named in Nigeria’s squad for the 2019 Africa Cup of Nations in Egypt where the Super Eagles will be looking to win a fourth continental title.