Jose Mourinho's side have a six-point lead over second-place Southampton at the top of the table and are 13 ahead of United, who lie fourth. dang ky 12bet
"Their back four has not changed and they have consistency in their team," Giggs told BBC Radio 5 live
United moved into the top four for this first time this season with dang ky fun88 Saturday's 2-1 win at Arsenal, but Giggs says they have been hampered by a lengthy injury list.
Defenders Luke Shaw, Marcos Rojo, Rafael, Phil Jones and Jonny Evans, midfielders Daley Blind and Jesse Lingard and striker Radamel Falcao are all cmd368 currently sidelined.
"You are seeing attacking football, us trying to score goals and taking the risks but we have not been able to get any consistency due to injuries," said the 40-year-old