Gives the fellow a different seat (7)
I believe the answer is:
donates
'gives' is the definition.
(donating is a kind of giving)
'the fellow a different seat' is the wordplay.
'the fellow' becomes 'don' (I've seen this before**).
'a different' indicates anagramming the letters.
'seat' with letters rearranged gives 'ates'.
'don'+'ates'='DONATES'
(Other definitions for donates that I've seen before include "Offers free" , "Gives to good cause" , "gifts" .)