Barnes, the former Liverpool and England winger, thinks Solskjaer has proven himself to be a ‘fantastic manager’ during his time at Old Trafford and deserves the chance to turn things around.
However, he did warn that the United board would ‘know’ when he’s taken them as far as they can and it’s vital for them to find more ‘consistency’.
‘They will know when Solskjaer can’t take them where they want to go.
‘They have to back the manager and try to get the players to get behind him, or they’ll have to look at the situation.
‘Solskjaer has shown that he is a fantastic manager with wins against PSG and other top teams, but United must start showing signs of consistency.’
After a slow start to the Premier League season, United have already been ruled out of the title race by most onlookers and Barnes admitted it could take several years before they’re ready to win English football’s top prize again.
‘The difference between when Liverpool turned things around and now is that the financial implications of football at the highest level are different,’ added Barnes.
‘It will be difficult for United in the next two or three years. They will be competitive, not winning the league, but with what they’re doing now it is hard to say what the future looks like.’