Dictionary for the French team to study (7)
I believe the answer is:
lexicon
'dictionary' is the definition.
(I know that dictionary can be written as lexicon)
'the french team to study' is the wordplay.
'the french' becomes 'le' ('the' in French).
'team' becomes 'XI' (a football team, from Roman numerals for 11).
'to study' becomes 'con' (con can informally mean to study).
'le'+'xi'+'con'='LEXICON'
'for' acts as a link.
(Other definitions for lexicon that I've seen before include "Nice lox (anag)" , "set of terms" , "Dictionary of terms" , "Word reference book" , "Dictionary, especially of ancient languages" .)