Louis van Gaal says he is unable to defend himself following Manchester United's Champions League exit, but he insists the Red Devils are improving under his tenure.
United crashed out with a 3-2 defeat at Wolfsburg, who made club history by reaching the knock-out stages as Group B winners.
PSV Eindhoven's 2-1 win at home to CSKA Moscow allowed the Dutch to claim second place at Manchester's expense as third-placed United now drop into the Europa League.
The Red Devils suffered a repeat of their 2011/12 European campaign when defeat in their final group game at FC Basel also denied them a place in the last 16.
The defeat puts Van Gaal under pressure with his side now winless in their last four games, but he says pundits who claim United are not improving under his stewardship are incorrect.
"I can't defend myself, because we are out of the Champions League and every word I say will be wrong," he said with United fourth in the Premier League table.
"But when you see the facts, we qualified for Europe last season and we are in a good position in the league. The facts say we are better than last year.
"I can only give facts, but of course I am disappointed that we are out of the Champions League."
Having scored just one goal in drawing their last three games, United needed just ten minutes to take the lead at Wolfsburg's Volkswagen Arena.
Anthony Martial's early strike for the Red Devils was cancelled out by first-half goals from Brazil's Naldo and Portugal's Vieirinha.
United drew level when Wolfsburg's French midfielder Josuha Guilavogui scored a late own goal seconds before Naldo claimed his second by heading the winner.
"It was a crazy match," said Van Gaal. "We twice gave away goals within two minutes after we had scored, that was difficult to understand.
"I am happy that we scored, but I am not happy why we defended so poorly and it's something I have to analyse. I've said in advance this was a tight group and you see it in the results we had.
"Our competitors showed it's not always United who finish first or second.
