Borussia Dortmund are prepared to sell Ilkay Gundogan this summer for a bargain basement fee.

Ruhr Nachrichter says the 23-year-old will now miss the World Cup due to a back complaint.

There remains no set date for his comeback, but his contract issues with last year's Champions League finalists - his contract expires in 2015 and he has thus far held off signing a new deal.< p> As such, despite his injury, a summer transfer to one of Europe's big hitters could be forthcoming - and Manchester United have long been admirers of the former Nurnberg man.