Schalke star Sead Kolasinac has fielded an approach from Arsenal.
Daily Mail says the Gunners have already been in touch about a move to the Emirates.
Kolasinac, 23, will be out of contract with Schalke in the summer.
Chelsea apparently failed with a £5.3m bid for the Bosnia international in January.
Although primarily a left-back, Kolasinac can also play at centre-half or as a defensive midfielder.
He has made 21 appearances in the German top flight this season, scoring three goals and assisting five in the process.