Promoter Frank Warren (pictured) has offered up light heavyweight Callum Johnson as an opponent for rising British star Joshua Buatsi. Johnson is 19-1 with the lone loss a failed title bid vs. Artur Beterbiev in which Johnson scored a knockdown. Here is what Warren said:  "I saw Joshua Buatsi headline one of Matchroom’s recent shows and a few people have mentioned since that they would love to see him against someone like Callum Johnson. We would make that fight in a heartbeat. In. A. Heartbeat! I'm not sure his team would let him near that one – but if he wants to fight a live opponent, it's there if they want it! I like Buatsi, he did what he needed to do and it was a good knockout but the fella he was fighting was…  he was what he was. But job done for Buatsi. Now come and have a piece of Callum!"