Vet PG and a shooter and we are in good shape.
If hypothetically Cliff landed here then you'd move Ejafor to the 4 and have Iwuchukwu back up both spots, I guess, but it would really hamper your shooting unless Luis and Ejafor both improved dramatically in that department (which I actually expect from Luis but not from Ejafor).
Dillon Mitchell presents a similar challenge, you can play him at the 4 and Ejofor at the 5 and have Iwuchukwu back up both spots, I guess, but again really limits your offense (although it maybe helps your defense).
All in all I'd rather add a shooter and a defend-and-distribute minded PG to the mix and let Rick coach em up