Alexis Sanchez is backing Arsenal to beat Manchester United today.

The striker reposted a video of from the Arsenal Instagram account which showed him scoring a fantastic goal against Liverpool.

And he wrote a caption saying: "You remembered me. I will never forget you too.

"You will always be in my heart. You were my first family in England and everyone took good care of me, especially the fans!

"All the best Gunners!!"

Former Arsenal and United striker Alexis is now playing for Marseille.