Ba also invited former Chelsea teammates John Terry and Eden Hazard to a charity dinner on 25 May 2015.
Samuel Eto’o and Diomansy Kamara are also expected to attend the event aimed at raising funds for the orphans of Senegal.
The Senegalese international sent out an invitation on his Instagram account revealing that the event will take place in central London.
Tickets will be priced at £65 and tables can be brought for £500.
Diaby has struggled with an ongoing injury problem. The French international has played in just 16 Premier League games over the last four seasons.
Wenger has always blamed Diaby’s injuries on Sunderland full-back Dan Smith who broke the midfielders ankle back in 2006.
Ba joined the Black Eagles on a €6 million move from Chelsea this summer and has 25 goals and seven assists for the Istanbul giants.