According to reports from Turkish publication Fotomac, the Gers are one of the many clubs interested in signing the 23-year-old Greek international.
Tsimikas has been a key player for the club and has played every single minute of Olympiakos’ five Champions League group stage matches this season.
He was impressive against Bayern Munich in the Champions League, and big clubs are showing interest in securing his signature.
Turkish clubs Galatasaray and Fenerbahce are keen to sign him. French outfits Nice and Rennes, Serie A club Fiorentina and German side Werder Bremen are all interested along with Rangers.