West Ham played without a centre forward. They were therefore able to pack central midfield with an extra man. This then nullified our inverted wingers who kept cutting in and at the same time deprived Eriksen of any space.
With two right footers on the left flank and a patently injured/knackered Walker, we just didn't have any natural width and were far too narrow. We thus played right into West Hams game plan.
Plus, we were tired in the second half thanks to taking too many first teamers to Anji. Dembele said as much in his post match comments. Massive mistake IMO and should not be repeated in the EL until at least the QF of that competition.
Link for the Dembele comments?