Banishment from English team extremely lamentable (5)
I believe the answer is:
exile
'banishment' is the definition.
(exile is a kind of banishment)
'english team extremely lamentable' is the wordplay.
'english' becomes 'E' (abbreviation as in OED).
'team' becomes 'XI' (a football team, from Roman numerals for 11).
'extremely' says to hollow out the word (remove centre letters) (only the extremes of the word are used).
'lamentable' with its centre removed is 'le'.
'e'+'xi'+'le'='EXILE'
'from' acts as a link.
(Other definitions for exile that I've seen before include "officially banish" , "Ostracism" , "Deportee" , "Send to live abroad" , "Send away" .)