Manchester United boss Ole Gunnar Solskjaer singled out the "terrific" Mason Greenwood after his side's rout of Southampton despite his goalless performance.

United hit nine past the Saints at Old Trafford to equal their record Premier League win.

Solskjaer said: "Mason Greenwood was terrific and his performance was top for a player who did not score a goal.

"When a game starts like [this one], it was always going to be about if you can get the first goal."

The United manager's praise comes after recently challenging Greenwood to reproduce the form he showed last season.

Solskjaer has cautioned Greenwood against falling foul of "second-season syndrome" and urged the striker to come through his difficult spell.

“Everything is a test," he said. "We talk about the second-season syndrome and if you take your eye off the ball for a slight second the Premier League is unforgiving.

“I have always said that 99% effort is 100% failure. And of course players who ease off in training every single day a bit.

"I'm not saying this is Mason, I am saying it's the case for every single one – it's always a learning curve and test."