Manchester United continued their perfect start to the Premier League season with a second 4-0 win on the bounce.Having sent West Ham packing at Old Trafford, Swansea were the next victims thanks to goals from Eric Bailly, Romelu Lukaku, Paul Pogba, and Anthony Martial.It's early days in the campaign, but Jose Mourinho's men look pretty unstoppable.The Red Devils boss was hugely impressed with his players, and he gave Martial a special mention after the game."Anthony Martial is working hard," Mourinho said, via the BBC."He is confident. The French language connection is there to help him a lot and get to the level we know he can be because the potential is huge."There had been talk that the former Monaco man's days were numbered at the Theatre of Dreams.RMC recently reported that Tottenham were hoping to take advantage of his uncertain situation by making a bid, though there haven't been any developments in that story.If he carries on playing like he is, then United would be mad to let him go. In fact, one stat has been doing the rounds which suggests the 21-year-old doesn't get the praise he deserves compared to other youngsters at the club.

Martial vs Lingard 

Perhaps that's a little unfair on Jesse Lingard. The England international's work ethic is second to none and he is improving all the time.

In terms of immediate impact, though, Martial is the clear winner. Two goals and an assist certainly isn't bad going at this stage of the season.

Martial's passion 

Last season was a difficult one for him, with Mourinho publicly calling him out for not making enough effort.

That's exactly why United fans loved his tweet after the Swansea game, where he displayed his passion for the shirt.

United welcome Leicester City next week and Mourinho must surely be thinking of starting Martial. There's always been the feeling that he isn't entirely convinced by the attacking midfielder, but that will have to change if he keeps contributing to goals.

Should Martial be starting for United? Have your say in the comments.