The Saints face London Wasps in the English Premiership on Sunday and Mallinder is looking to build momentum ahead of the Heineken Cup quarter-final against Ulster in just over a fortnight's time.
"We have players back from injury, the Six Nations and suspension now and It's good that we have got them back," he said.
"They have all been off and done well, and we are really pleased to have them back. It is good for the group to have them back.
"We have got virtually a full squad to pick from, which is a positive thing.
"What we have got to do is integrate the squad very quickly, get the internationals used to playing our way and not the England way. Get them used to our calls and make sure when we go out we play as a team."
"We need to get some momentum and if we do there is no reason why we can't have a very good end to the season."