Bayern Munich have fired a threat at interested clubs eyeing off Robert Lewandowski.

One of the Pole's representatives declared this week he was felt let down by coach Carlo Ancelotti last season.

The comments sparked the interest of Real Madrid, Chelsea and Manchester United, with the latter two immediately making contact with Lewandowski's agents.

However, a Bayern spokesman said last night: "Bayern is not even thinking of a Lewandowski exit.

"There will be no negotiations with other clubs, and any club that enters into negotiations with a player who has contract in force is subject to a FIFA sanction."