David de Gea could quit Manchester United this summer if Louis van Gaal remains as manager, the Daily Mail reports.
The Spain goalkeeper has reportedly grown disenchanted with life under the Dutchman, despite signing a new four-year contract at the start of the season.
It is believed the goalkeeper will press for a move away if Van Gaal were to be retained.
It promises to be a major issue for United. De Gea has been their star player during a season that has seen them miss out on qualification for the Champions League.
And reports in Spain have claimed that Real are preparing to activate the 25-year-old shot-stopper’s £40million release clause which was written into his new deal last year.
According to Spanish daily AS, De Gea has a £40m clause in his contract which can be triggered before June 16 and the Spanish giants are weighing up a fresh bid.
The deadline means Real chief Florentino Perez has just under a month to wrap up a deal for the Spain international who he narrowly missed out on last summer.
Meanwhile, United are reportedly discussing whether to press ahead with a deal to sign Zlatan Ibrahimovic, who is a free agent after quitting Paris Saint-Germain and has declared a desire to play in the Premier League.
United sent scouts to watch the Sweden striker, 34, in last week’s 1-1 draw at Bordeaux and they are now debating whether to make him an offer.