Football team, last in Bundesliga, learns dancing (7)
I believe the answer is:
arsenal
'football team' is the definition.
(Arsenal football club)
'last in bundesliga learns dancing' is the wordplay.
'last in' indicates one should take the final letters.
'dancing' indicates an anagram.
The last letter of 'bundesliga' is 'a'.
'learns' with letters rearranged gives 'rsenal'.
'a'+'rsenal'='ARSENAL'
(Other definitions for arsenal that I've seen before include "Place where guns and ammunition are stored" , "Football team - magazine" , "Weapon store - team" , "gunners, so-called" , "6D 5A [TUBE STATION]" .)