We need 4 CMs who can start matches, to compensate for injuries/suspensions/callups. Need to keep Davis. I'd expect the team to keep him along with Rza and Casseres. Could use a TAM level guy to partner Casseres as the starting tandem if it's still 4-2-3-1. I also think that Rza isn't an everyday starter. He'd be the primary sub for the CDMs should any starter go down. But to keep him at $450k though? Rza's best attribute is that he can play alongside the 6, but can play the 10 in a pinch. But it'd be bad if he gets a lot of games, imo.
I dump Rza.
I keep Davis as depth. Possibly a starter depending on how the team lines up and or if Armas is fired.
I keep Kaku and CCJ but I maybe push Kaku wide to open up the possibility of signing another stellar 10. Undecided.
Too many moving pieces to accurately predict how many CMs you need to sign. Id go after at LEAST one DP starting CM. 6 8 10 doesnt matter. Just get the very best player you can.
Then I sign Felipe as...oh wait...I sign Dax as a backup CDM and locker room leader...oh wait...I sign a DIFFERENT experienced CDM who has stellar leadership skills.