I don't know what to think about this potential swap, tbh. Both players have weaknesses and strengths that would be highly complementary if they played in the same team. I'm fairly certain with kessie our midfield would be more balanced, on the other hand without brozo we would lose technical ability, but I don't think that would hurt us much given the other midfielders we have like hakan, barella, miki, even asllani who are highly technical as well. One thing we need is presence, and kessie is definitely a big presence in midfield.
Hakan can play regista quite well and in recent times we saw that we didn't look lost without brozo like in recent years, and maybe our overreliance on him cost us in certain moments. I'm kinda edging towards being for the swap for the simple reason that we need some shake up in the team and maybe a midfielder with different characteristics, that is also seria a proven is the way to go.