Boro travel to the Lane on Sunday on the back of successive defeats and have won just two of their Premiership encounters this season. The two most recent defeats have been against Chelsea and Newcastle, where reports from the games suggest they gave more than a good account of themselves.
The Middlesbrough game signals the beginning of a busy week for the squad, with West Ham in the Carling Cup coming up on Wednesday and Bolton on Saturday. David insists a good start to the trilogy is important.
"We start with Middlesbrough and we must do well against them," he considered. "They will be good opposition and we have to believe their manager when he says they are playing well with no luck.
"He says their luck will turn and, if they continue to play well, it will turn. We have to be wary of that. We are playing against a different type of team to Leicester - it probably suits us more to play against teams that pass the ball.
"People like Mendieta (above), Doriva, passing players at the back like Southgate - they've got some good players."
David added that he is certain that he possesses a depth of squad to cope with the busy three-game spell and reports that his options could well be bolstered as he approaches this period.
"I would hope that we could consider Christian Ziege very soon, although that doesn't mean to say he'll go straight into the team. We could consider Postiga, Anthony Gardner will be considered after suspension and hopefully Ledley King will be available.
"Simon Davies will also hopefully be available a couple of weeks from now.
"I'll think we'll certainly have the scope to make changes if neccessary - I've been very impressed with one or two of the younger players. Johnnie Jackson was in the squad at Leicester and very unlucky not to be in the final 16.
"He has been playing well, Jonathan Blondel (right) has had a touch of Flu but is okay now, the young boy Mark Hughes has done splendidly in the last few reserve games. So there are a few that we could carry along provided that the spirit, strength, determination, drive and understanding of the team is there.
"To handle these three games coming up we need as many bodies fit as possible."
David Pleat says that we must believe Steve McClaren when he says that Middlesbrough are playing well without getting any luck.