Julian Nagelsmann is not at all concerned about transfer speculation surrounding Robert Lewandowski, believing it is "completely normal" that other clubs would be interested in the Bayern Munich superstar.

Reports emerged this week of Lewandowski wanting to leave Bayern, where he has been the main man since signing from Borussia Dortmund in 2014.

But a big fee is said to deter potential suitors, while Manchester City manager Pep Guardiola – Lewandowski's former Bayern coach – completely dismissed the idea of signing the forward on Friday.

In the meantime, Lewandowski continues to perform for the Bundesliga champions.

Having last term scored 41 times in the league – breaking Gerd Muller's single-season record – the 32-year-old, who turns 33 on Saturday, has maintained his lofty standards in the opening weeks of the new campaign.

With a brace against Dortmund in the DFL-Supercup in midweek, Lewandowski now has a record seven goals in that match and has netted in 14 successive games in all competitions – two shy of another Muller record.

Nagelsmann took that display as evidence of Lewandowski's continued happiness in Bavaria.

Asked about the rumours ahead of Bayern's game against Cologne, the coach said: "That doesn't bother me at all, if I'm being honest. That is part of the business.

"If I were not coach at Bayern but at another big club, I would always ask about that name and hope that something would work. It's because he scores a lot and is the most dangerous striker out there. This is completely normal. 

"The only thing that matters to me is how the player reacts – and Lewy is in top shape. He talks a lot to me and the players in training. He is not a satellite that isolates himself and hopes that he will go away. 

"He feels good, which was also shown by his performance against Dortmund, even in training. A player who wants to leave would not do that. 

"It is part of life that there are rumours. Live and let live – both journalists and players. When the player is in a good mood, and that's the case, we're all happy."

Before equalling Muller's streak, Lewandowski can first match his own best stretch. With a goal against Cologne, he would net in 12 league games in a row – only previously doing so for Dortmund in 2012-13.