Barcelona aren't ruling out signing Borussia Dortmund midfielder Ilkay Gundogan this summer. Despite their transfer ban, Barca are considering buying Gundogan and having him train for six months before registering him to play from January 1 2016.

The Germany international is also on the shopping lists of Manchester United and Arsenal.

Gundogan was in Barcelona earlier this month, sparking talk of fresh negotiations with the La Liga champs.

The midfielder has confirmed he'd have signed for Barca two years ago if not for injury.