Complex sentence: After leaving Buffalo's training camp in 1995, which finished midway through the CFL season, he signed with the Calgary Stampeders, which still retained his negotiation rights from the 1992 CFL draft.
Split into simpler sentences: After leaving Buffalo's training camp in 1995, which finished midway through the CFL season he signed with the Calgary Stampeders. Calgary still retained his negotiation rights from the 1992 CFL draft.