Yes and no. Our fixture list will have been the motivation for subbing Sonny off and even without him on the pitch we were in control and should have scored from at least one of the chances we made (why we seemed to scuff every shot we took I have no idea).We have ourselves to blame.
Totally coasted the second half. It shouldn't even have come to this.
So I agree we needed to put it out of sight, but Mourinho only seemed to have us play conservatively in the last ten minutes or so. It should have been enough. We can't be harsh on Dier either because the guy is doing what anyone else would do while jumping to contest a header.