One partnering Fender to applaud century (7)
I believe the answer is:
Here is my best explanation:
'one partnering fender' is the definition.
(Eric Clapton and the fender guitar)
'applaud century' is the wordplay.
'applaud' becomes 'clap' ('clap' can be a synonym of 'applaud').
'century' becomes 'ton' (both can mean one hundred of something).
'to' is the link.
(Other definitions for clapton that I've seen before include "Guitarist" and "Eric -, British guitarist".)