Walk with team around walls of tower (6)
I believe the answer is:
stride
'walk' is the definition.
(stride can mean to walk around)
'team around walls of tower' is the wordplay.
'team' becomes 'side' (both can mean a sports team).
'around' indicates putting letters inside.
'walls of' suggests removing the centre (only the edge letters remain).
'tower' with its middle removed is 'tr'.
'side' going around 'tr' is 'STRIDE'.
'with' is the link.
(Other definitions for stride that I've seen before include "Move with long steps" , "Walk along in direst way" , "Long step of direst kind" , "use your legs!" , "Step out energetically" .)