In this discussion, Dr. Souleymane Bachir Diagne advocates for multiple Pan-African languages. While he includes the colonial languages along with Swahili in his formulation, he also suggests Manding and Fula.
His recommendation of Manding, which I would broaden to include the Mandé languages generally, is a logical one. These languages possess a high degree of mutual intelligibility.
His recommendation of Fula surprised me, though perhaps it should not have. When I was in grad school, a colleague of mine, Rama who was from Senegal, told me that she considered Fula to be an ideal candidate as a Pan-African language. Consider that it is enjoys a wide geographic dispersion (see the map below).
I consider Dr. Diagne’s suggestion that the colonial languages are acceptable vehicles of Pan-Africanism problematic for reasons that may be obvious. If they are not, you can read my thoughts on this here: http://libjournals.unca.edu/moja/wp-content/uploads/2021/10/MOJA21-v2i1-Rashid.pdf. I do accept that such languages are a part of our social milieu, however I also recognize that the impacts of languages extend beyond their utility and includes the political, economic, and conceptual. I contend that we leave the fetters of colonialism on our social systems and our minds by remaining wedded to these languages.
These criticisms notwithstanding, it is a worthwhile dialog.
Pan-African Forums – The Question of Language (23 Feb 2021) https://youtu.be/_BdKKOxYkdQ