Fairy keeping a team in food (5)
I believe the answer is:
pixie
'fairy' is the definition.
(I know that pixie is a type of fairy)
'a team in food' is the wordplay.
'a team' becomes 'XI' (a football team, from Roman numerals for pp).
'in' indicates putting letters inside.
'food' becomes 'pie' (pie is a kind of food).
'xi' placed inside 'pie' is 'PIXIE'.
'keeping' is the link.
(Other definitions for pixie that I've seen before include "Creature like fairy or elf" , "Small supernatural being in fairy tale" , "Little person" , "Supernatural being with pointed ears" , "Mischievous fairy" .)