finishing third behind Benfica and FC Basel.
"That was very careless," he told Inside United. "We can't accept that. We're better than that. "And I played a part in that as well. I took too many risks with team selections, played too many young players in certain games.
"That won't happen again next season. We'll qualify from the group stages. I'll make sure of it. European football is hugely important to this club and we need to be competing for the biggest trophies. We need to make a statement and show everybody last season was just a blip."
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