For this roster? Nance no doubt. He's capable of defending 3-4 and some 5s, can shoot the three and can pass.
Favors is a centre at this point. He's been good without Gobert - in 2017-18 he averaged 15/9/2 when Gobert wasn't playing, and I think he could replicate this on a team where he played 30MPG as a centre. That team just isn't us