Uncertain situation from Eric Maxim Choupo-Moting makes Bayern will looking for new players immediately because Choupo-Moting hasn't extended his contract yet which is will be expired on June next year so Niclas Füllkrug name was appears as the possibilities to replaced Choupo-Moting position and indeed this season Füllkrug has impressive performance with Bremen and 10 goals from 14 matches showed his is sharp striker especially because he playing at mediocre team Werder Bremen
Reported Bremen also are willing to sell him because they are needed money and price tag for Füllkrug also not expensive even more likely to cheap approximately 10 millions euro but Füllkrug was 29 years old player and Bayern have policy that they didn't giving long duration contract to the players who almost reach to 30 years or more so if this news true probably Bayern only giving him short term contract
If this transition takes place, then in my opinion it will be a super strange acquisition. With all due respect, he is not a top player and will never be one - why is he in Bavaria? I do not think that Bayern will "shrink" and make weak transfers. They need a top striker and at a young or at least promising age of 25 - a maximum of 27 years.
There is always the possibility that in the absence of Lewandowski, Choupo-moting this season is still performing well for Bayern, so there is bound to be some news about this.
Both parties from Bayern and Moiting have still not made any statements and even the players themselves are still reluctant to comment on the grounds that they want to focus on the world cup first.
On the other hand, it is possible that Bayern will also be looking for a new striker so this could be the reason this contract extension is being held up.