Republic of Ireland assistant manager Roy Keane has launched a scathing attack on Manchester United's recent dealings in the transfer market.
Since the Glazers took over the Manchester United in May 2005, they have spent over £696m on interest fees, bank charges and debt repayment, and £382m on players.
"They've kind of cut corners in terms of transfers in the last few years, they've not gone out and got the big players, and it's just caught up with them this year," he told ITV.com.
The Cork native believes that the situation at Old Trafford is retrievable but the Glazers will have to loosen the purse strings.
"I think Man United need five or six players. If it happens in the summer then instead of being fearful of it, embrace it – it's exciting. These can be exciting times for Man United. Get them back to the very top where they belong."
United need to focus on the here and now however and Keane believes they can become a dangerous team again in the near future.
"There's always something to play for. You've always got to win your next football match so if you're telling me in January that your season is over, or when the Champions League starts, that's nonsense," he added.
"You're playing for pride, you're playing for points, and United, if they do go out of the Champions League, still want to get in it next year.
"I think beating Olympiacos will be the priority. On form at this moment in time you have to say the Champions League is a long way off for Manchester United. But lots will change over the next few months. I think United will beat Olympiacos," Keane said.
"They'll have Rooney, Van Persie back after injuries. At this moment in time, would I fancy United for the Champions League? Probably not. But they're still a threat, they're still there. Big team, big players and in a couple of months' time when the big players are back up to speed with their fitness United will be a dangerous team.
"Watching United more closely perhaps than other people, you still think the Van Persies and the Rooneys if they're at it, will be a threat to the competition. I still think United can be dangerous if they get their act together over the next month or two."
Some Manchester United fans have taken to social media calling for David Moyes' head but Keane insists the Scot just needs time.
"I think the man deserves plenty of time. I think people have been afraid to use the word that there might be 'rebuilding' going on but that's exactly the word I would use."