Manchester United do not scare teams any more and cannot claim to have had a successful season despite winning the Europa League, former Liverpool striker Emile Heskey has told ESPN FC.
Heskey, speaking on a visit to Singapore, said Jose Mourinho's team were a pale imitation of the side that dominated under Sir Alex Ferguson.
"They came sixth in the Premier League. Is that successful? It's not really successful," he said.
"Winning the Europa League is a success, but in the league? No. I'm guessing they would have mixed feelings.
"It's not the United that I played against, who were dominating and scaring teams. They don't have that threat any more.
"When you went to Old Trafford, you feared what was going to happen. Now, people don't care. So they need to get that fear factor back."
Heskey was a key member of the Liverpool side that won the UEFA Cup, the FA Cup and the League Cup under Gerard Houllier in the 2000-2001 season.
Mourinho also gained three trophies, with the Europa League success adding to victories in the FA Community Shield and EFL Cup.
But Heskey said he would reserve judgment on whether the coach has regained his magic touch after leaving Chelsea midway through a disastrous 2015-16 season.
"At the end of the day, he's a manager who's won a lot and he's got a Europa League trophy now," the former England international said.
"So he'll say he's still got it. Only time will tell, over the course of however many seasons he's there, if he still has it."
United secured Champions League football next season thanks to their Europa League win over Ajax in Stockholm despite finishing seven points behind fourth-placed Liverpool and scoring 24 goals fewer.
"I wasn't actually that bothered. I looked at it [the Europa League win] as having another English team in the Champions League, which is great," Heskey said.
"I'm guessing they will spend a lot of money in the summer and they'll come back very strong."
Emile Heskey will be ESPN FC's special guest at a UEFA Champions League final viewing party at Singapore National Stadium on Saturday.