Alex Ferguson has admitted that he is still disappointed by Manchester United's Champions League exit.
United failed to escape from the group stages for only the second time in 16 seasons.
"It was a massive disappointment because my feeling is that if we'd gone through, we would have gone on to the final," Ferguson said.
"For me, the problem was the home game against Basel.
"We were 2-0 up and then missed four or five clear-cut chances. We ended up losing our concentration and though we managed to salvage a draw, it was a bad result for us."
United will face Ajax in the Europa League on Thursday.