Kessler can fight a hard 12 rounds and is better technically. Cleverly loses unless he is bigger and manages to enforce it. It is possible.
Kessler's getting on a bit, he's going up a division, he's had some tough fights, he's had an eye operation, the time could be right for Cleavery. Nathan is slicker than Kessler and if he boxes...... wait for it.......cleverly behind his jab with a very high work rate and sticks to a plan he takes it by decision. He's super fit could give Kessler a hard time. I'd love to see this fight!
Kessler walks through Cleverly's punches all day and eventually stops him, Ive yet to see anything from Cleverly that makes me think he can really mix it at world level.