WHY IS THERE A FUSS OVER THOMAS MULLER?

i fail to understand what the fuss is being made over Thomas Muller the Bayern Munich footballer. He has clearly said he has no intentions what so ever to leave Bayern Munich soon, so why do these stupid managers make a bid for? It is now reported in THE DAILY STAR that Manchester United have increased their bid from fifty milllion pounds to sixty million pounds for the sale of Thomas Muller. And any way Thomas Muller has no desire what so ever to leave the German giants bayern munich and join a club forth in the English Premier League.