Ertz (1yr) for Njoku (3yrs) + Kupp (1yr)

[Mr. Wizard]

Got an offer on the table looking to get Ertz (on an expiring contract) and in return I would receive Njoku on a three year deal and a rental of Kupp. In an attempt to win now, I'd say keeping Ertz is probably smart, but then again... I don't like buying high but if Kupp is gonna be part of this Greatest Show on Turf 2.0 thing, Kupp sure could look nice in the flex. I'd theoretically like to "win now" and my roster supports it but I've gotten unlucky and started 0-3.

I suppose the simpler core of the question is how people are feeling about Njoku -- I was high on him coming out but haven't followed on why he hasn't produced much. Would you think he will be a serviceable starting TE with Baker in the mix or is that still a massive diceroll?