"When you concede so many easy goals it does not help".
Arsenal are now eight points adrift of the top four and will fall even further behind should City avoid defeat at Anfield.
"We are very ambitious in our target, but we need time and patience", said Emery.
Speaking at his post-match news conference on Saturday, Lampard said: "Christian came from another league, didn't really have a great break".
"The second goal was a little bit unfortunate for us as I thought we were starting to grow into the game and were looking a little bit more like ourselves, but the shot looped up kindly for Christian Pulisic to score".
Hodgson continued: "I always had a lot of respect for Frank as a player and I am pretty certain he will make sure the football world has equal respect for him as a manager the longer his career goes on".
"We are not in a good position in the table".
Dennis has three goals in nine league appearances for his Belgian club this season, and also notched twice against Real Madrid in the Champions League earlier in the campaign.
John Lundstram struck the post for the visitors with the best effort of the first half, but a rare defensive error from the Blades set up Son Heung-min to open the scoring with his eighth goal of the season just before the hour mark.
It was no more than United deserved after they had a David McGoldrick goal ruled out for a fractional offside after a VAR check that took nearly four minutes to complete.
Burnley had lost their previous three games but dominated on Saturday after Ashley Barnes poked home in the 11th minute.
George Baldock's fortuitous equaliser saw Sheffield United stretch their unbeaten run to five games with a deserved draw at Tottenham, who remain without a win in the league since September.
Tom Davies gave the Toffees the flawless start at St Mary's before Danny Ings equalised early in the second half. Newcastle trailed at home to Bournemouth but goals by DeAndre Yedlin and Ciaran Clarke sealed a 2-1 win.