The former Arsenal winger is entering the final 12 months of his deal with the Bundesliga giants, and is reportedly wanting a better offer to remain at the club.
The rise of the 26-year-old has been remarkable, especially after comments from former West Brom boss Tony Pulis who said he was 'not good enough'.
"Serge has come here to play games but he just hasn't been for me, at the moment, at that level to play the games," he said in October 2015.
Once he returned to Germany, Gnabry showed the form that has made him the player he is today.
Successful spells with Bundesliga outfits Werder Bremen and Hoffenheim from 2016-2018 saw him earn a transfer to Bayern who have benefited highly from his services.
In four seasons in a row, Gnabry has netted double digits in the league and has helped the club win the title in each of those years.
However, those numbers could be coming to an end soon as Sky Sports Germany report that a difference in salaries could see him leave Bavaria this summer.
Gnabry's current deal expires in 2023 and, alongside the two Premier League giants who are said to be looking at him, Real Madrid and Barcelona are also keeping an eye on proceedings.
A deal to keep him at the Allianz Arena though may not be too problematic as the report states he wants to remain with the club and wants to be paid the same as teammates Kingsley Coman and Leroy Sane, who are both said to be earning €15million (approx. £12.7m) a year.
Furthermore, talks are still continuing to take place and Bayern boss Julian Nagelsmann does not intend to lose him.