Carrick: Man Utd have plenty of room for improvement
"We've been champions two years on the spin and are even more of a scalp, so teams are really up for it. We managed to overcome that challenge last season and that success drives you on.
"I think we will improve this season, as well as other teams and it's who can do it over the course of a season.
"We've managed to do it the past couple of years and it's the test to do it again."