Bayern Munich's chief executive officer Karl-Heinz Rummenigge has urged his Manchester United counterpart, Ed Woodward, to stop bidding for Thomas Muller.
Louis van Gaal was on the lookout for a world-class hitman to rejuvenate his forward line this summer following the departures of Robin van Persie and Radamel Falcao.
Muller, 26, emerged as a top target for the Dutchman, and Woodward reportedly launched offers of £55million and £65m; both turned down by the Bavarian outfit.
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The Red Devils eventually settled for the lesser-known Anthony Martial, but it seems interest in Muller has refused to die down.
Rummenigge has suggested that despite the transfer window closing last month, Woodward is still trying to convince him to part ways with their German striker.
But with no pressure to sell and Muller in fine form, the Allianz Arena chief has insisted that the Premier League outfit are simply wasting their time.
He told Bild reporter Christian Falk: "I told Woodward, I can not switch of [sic] my e-mail account, so he should stop sending offers for Thomas Muller"
The perfect striker
Muller would have been an incredible signing for Manchester United. The World Cup winner has bagged eight goals in eight Bundesliga games so far this season and a further two in the Champions League.
Meanwhile, Van Gaal could only call upon the 19-year-olds Martial and James Wilson as they failed to strike against Arsenal on Sunday. Had Muller led the line at the Emirates, the score would have almost certainly been different.
However, despite the seemingly endless amounts of money available to invest in players, Manchester United have found that it can't buy you everything.