The agent of Bayern Munich striker Robert Lewandowski has confirmed that his client wants to leave the club this summer.

Lewandowski was increasingly linked with a move away from the German champions throughout the course of the 2017-18 season, but Bayern continually insisted that the player was not for sale.

However, the 29-year-old has now told the club that he is eager for a new challenge, putting the likes of Manchester United, Chelsea, Real Madrid and Paris Saint-Germain on red alert.

"Robert feels he needs a change and a new challenge in his career. The managers of Bayern know about it," agent Pini Zahavi is quoted as saying by Bild.

Lewandowski has scored 151 goals in just 195 appearances during his four years with Bayern, passing the 40-goal mark in each of the past three years and helping the club to four successive Bundesliga titles.

Bayern have been linked with Atletico Madrid striker Antoine Griezmann and Real Madrid's Gareth Bale as possible replacements for the Polish international.