I don't think Jones will be starting tomorrow if it can be avoided (which it can now Shaw is fit, and definitely could be avoided if Smalling is available) - it would be a huge ask for the lad, I know he completed the 90 against Swansea when we had availability issues, but it was hardly a test against a diabolical Swansea. Give him minutes against Feyenoord on Thursday, a profile of game that'd be more suited, but I'd be very wary throwing him in against Arsenal.