![Alexis Sanchez, left, celebrates after scoring Manchester United's opening goal against Arsenal. AP Photo](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/72U6NN2MPV3HJ4FGOUULHVOPDM.jpg?smart=true&auth=b0184365a87f6d00b9a1bfc28dab90545e740ce8429f87b9be01a1feb5d4ee33&width=400&height=225)
Alexis Sanchez, left, celebrates after scoring Manchester United's opening goal against Arsenal. AP Photo
Alexis Sanchez, left, celebrates after scoring Manchester United's opening goal against Arsenal. AP Photo
Ole Gunnar Solskajer revels in 'classic' Manchester United display after FA Cup win over Arsenal
Sanchez scores opener against former club, before Lingard and Martial book passage into the fifth round at Emirates Stadium