jurgen klopp will leave borussia dortmund after seven years in charge .
he has denied that he wants to take a break because of exhaustion .
premier league clubs could make a move for klopp this summer .
but he is unlikely to replace manuel pellegrini at manchester city .
klopp has won two bundesliga titles and the german cup at dortmund .
he has admitted that he is no longer the perfect manager for the club .