Tries to interrupt football team’s practice (9)
I believe the answer is:
rehearsal
'practice' is the definition.
(rehearsal is a kind of practice)
'tries to interrupt football team's' is the wordplay.
'tries' becomes 'hears' (as in trying or hearing in a trial).
'to interrupt' is an insertion indicator.
'football team' becomes 'Real' (Real Madrid).
'hears' inserted into 'real' is 'REHEARSAL'.
(Other definitions for rehearsal that I've seen before include "Play run-through" , "Dramatic practice" , "Practice in theatre etc" , "Preparation for a show" , "preparation in house?" .)