Manchester United’s troubled defence faces a tough test against Arsenal this week.

The biggest challenge will be to find a way to keep Pierre-Emerick Aubameyang quiet.

Aubameyang is the Premier League’s top scorer with 10 goals.

Romelu Lukaku has five, which barely seems plausible based on his poor performances.

 (Photo by Mark Leech/Offside/Getty Images)

Aubayemeyang has attributes Lukaku does not. He is fast and links the play well, and he is full of confidence right now.

Jose Mourinho paid more for Lukaku than the fee Arsenal spent on Aubameyang, which was just £56 million.

Aubameyang was available from Dortmund in the summer of 2017, but no clubs met the German side’s asking price.

There were question marks over his attitude, but so far at Arsenal he has been the model professional.

 (Photo by Mike Hewitt/Getty Images)

Aubameyang is much more mobile than Lukaku and this benefits the whole team. Lukaku’s poor displays have been to the detriment of United this season.

Wednesday night’s game is a chance for the Belgian to prove us wrong if he is fully fit, but right now Aubameyang is the striker we would rather have.

It looks like Jose Mourinho may have made an error attaching his faith to Lukaku when a cheaper and better alternative was readily available.