Valencia defender Shkodran Mustafi is being linked with a return to England.
The Daily Star says Arsenal have held transfer talks with former Everton defender Mustafi.
The Gunners are believed to be in the market for a new centre-half with Per Mertesacker and Laurent Koscielny both set to miss the start of the season.
Arsenal are said to have held initial talks with the agent of Mustafi over the possibility of a summer move.
Reports also suggest that Arsenal remain keen on Inter Milan defender Jeison Murillo.