Live with teams, to boot (7)
I believe the answer is:
besides
'to boot' is the definition.
(I've seen this before)
'live with teams' is the wordplay.
'live' becomes 'be' ('be' can be a synonym of 'live').
'with' says to put letters next to each other.
'teams' becomes 'sides' (I've seen this before).
'be'+'sides'='BESIDES'
(Other definitions for besides that I've seen before include "See bids (anag)" , "Anyway" , "also is available" , "Apart from" , "Additionally" .)