Medal of British and French football side (6)
I believe the answer is:
bronze
'medal' is the definition.
(eg at the Olympics)
'british and french football side' is the wordplay.
'british' becomes 'br' (abbreviation for British).
'and' says to put letters next to each other.
'french football side' becomes 'onze' ('eleven' in French - 11 footballers).
'br'+'onze'='BRONZE'
'of' is the link.
(Other definitions for bronze that I've seen before include "Copper and tin alloy - sculpture" , "Popular alloy for sculptures" , "Third prize" , "Tan; metal alloy" , "Third place - alloy" .)