The Reds endured a chastening 2013/14 season under former boss David Moyes to finish seventh in the Barclays Premier League, and also suffered hugely disappointing exits in both domestic cup competitions and the UEFA Champions League.
Van Gaal officially takes charge after the World Cup but the club has already signed Ander Herrera and Luke Shaw. Carrick has welcomed both additions to a squad he believes was already capable of winning trophies this term.
“It's not a nice feeling when things don't go right,” the 32-year-old midfielder told Sky Sports News. “You give your best as everyone did, sometimes it just doesn't go for us and that was the case over too long a time really.
“You have dips and you expect to get over them quickly – and at times we showed that we were going to get over them – and then just as results and performances were changing we took a step back again. That was very frustrating.
“Looking back, it was a disappointing campaign, but we’ve got to learn from it. Never stop learning and take what we can. We've certainly still got enough quality in the squad – regardless of who is coming in this summer – to be up there challenging again.”
Carrick has also welcomed the signing of fellow central midfielder Herrera and expects the 24-year-old playmaker to settle in nicely at Old Trafford, having previously faced him during the Reds’ Europa League defeats to Athletic Club