Borussia Dortmund defender Marc Bartra is reportedly considering leaving the club to return to Barcelona.
According to German source Sportbuzzer, the Spaniard, who joined Dortmund 18 months ago on a four-year contract, wants a change of scenery and is seeking a return to his home country.
Dortmund signed Manuel Akanji from Basel earlier this month, leading to suggestions that one or two other centre-backs could depart before the window closes.
Bartra was signed by Dortmund following Mats Hummels's move to Bayern Munich, and was a regular fixture at the back for the club last season.
The 27-year-old suffered a broken bone in April, however, after the team bus was the target of an explosion prior to Dortmund's Champions League tie with Monaco.