Robert Lewandowski's agent has insisted the striker is unlikely to leave Bayern Munich and warned any possible buyers that his client would cost more than €50 million.
Manchester United have been linked with the Poland international but Cezary Kucharski said Lewandowski is not thinking about a move to Old Trafford or anywhere else.
Lewandowski scored 25 goals in his debut season with Bayern Munich and has struck 119 times in the last four years, leading Kucharski to put a high price on the former Borussia Dortmund forward.
"I think it would have to be a very high offer, definitely higher than €50 million," he told Polish television.
"Robert is one of the most valued strikers on the market who guarantees goals, guarantees assists, excitement. He has shown that over many years during his career.
"Every year he is an even better player and plays at a higher level and that is very important for other clubs because he has credibility and guarantees at least 30 goals a season."
United, who will be short of strikers when Robin van Persie completes his move to Fenerbahce, have only paid €50 million or more for two players, Juan Mata and Angel Di Maria, in their history.
Bayern have sold vice-captain Bastian Schweinsteiger to United, but the Bundesliga champions' chief executive Karl-Heinz Rummenigge ruled out letting any more players move to Old Trafford this summer.
And Kucharski said Lewandowski would only look to leave the Allianz Arena if Bayern give an indication they do not want him and insisted he has not received that message and has no plans to negotiate a move.
"There must be a signal from the club, from Munich," he added. "There is no such signal so we are not thinking about it, because even thinking about a change of club would be unfair in my opinion to the current employers.
"Bayern would have to think about why they would get rid of Robert Lewandowski. It seems to me that there is no reason to even think about it.
"With a player of Robert's class, the truth is that not a lot of work is required because really there are only two directions in which he could go in the future, England or Spain, and only with Bayern Munich's acceptance."