[FM21] player relationships/synergies help

[crpcarrot]

I'm not at home right now and i don't know the right term for it in game, i'm talking about the lined on the tactics screen that show two players work well togther.

well in my case i've got a dotted line between my RFB and RAM apparently they don't play well together. seems a bit strange as they have performed good and bad but since we nroe not the best team in the EPL ther e was been some losses. 

my problem is that they are two of my best players in the positions and and i cant really leave either of them out. they don't play well in other positions either. is there a way to improve the relationship issue? maybe putting them in a same metoring group or something