Google Translate can do both Yoruba and Hausa (the latter was what I had in mind, Kano is in the northern Hausa-speaking desert region). In Hausa:

Dear Sir,

Ka gãfarta wannan unconventional m, kuma amma nĩ zuriyar da MacDonald Iyayengiji na Tsibirin kuma na gaji dangina ta main kifi gona, dauke da miliyan goma kifi a kusa teku Loch. New dokokin daga Scottish gwamnatin Mun sanya shi ba zai yiwu ba a gare ni in amfãne daga gare shi, a cikin hanyar ta kakanninsu suka yi. Sabõda haka na so don matsawa da kifi zuwa wani waje location. Ina miƙa ka a daya bisa uku rabo a cikin kasuwanci, idan zan iya motsa su to your kifi gona a Kano ...

I kinda doubt it's good enough to plunder many Nigerians of their fish.