Do you have two TE spots on the roster? Is he (Jonnu) making it into your flex?
Even with AJB out his production has been TD-dependent. We aren't 100% sure what we're getting with MAC yet, but I think there's a reasonable argument that he has higher upside and if you already have Kelce rostered it's perfectly reasonable to opt for MAC instead.
And of course him playing this week should seal the deal.