If Delph is out, then I think it's a toss up between 4-2-3-1 or 4-4-2
I think he will go with the former and play Sylla and Westwood sitting, with Albrighton, Tonev and Bacuna wide/central with Andi up top. I hope Andi takes his challenge up by being up front in his natural position. I will be glad to see Bacuna and his attacking qualities higher up the pitch. He was excellent against West Brom.
If it is 4-4-2, the. It will be Albrighton, Sylla, Westwood and Bacuna with Andi and Helenius.