Discussion yearly with former champion at Wimbledon (7)
I believe the answer is:
palaver
'discussion' is the definition.
(palaver can mean a discussion or conference)
'yearly with former champion at wimbledon' is the wordplay.
'yearly' becomes 'pa' (abbreviation for per annum).
'with former champion at wimbledon' becomes 'laver' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'pa'+'laver'='PALAVER'
Can you help me to learn more?
(Other definitions for palaver that I've seen before include "Time-consuming business" , "Yak" , "Rabbit" , "Fuss and bother" , "Rigmarole" .)