Chelsea beat Manchester United 3-1 on Sunday to book their place in an all-London FA Cup final, helped by two errors from United goalkeeper David de Gea and an own goal by Harry Maguire.

Chelsea, who will face city rivals Arsenal in the Aug. 1 showpiece, had lost to United three times this season but looked brighter from the start at Wembley and took control with goals either side of halftime from Olivier Giroud and Mason Mount.

Earlier, Arsenal manager Mikel Arteta said their 2-0 victory against Manchester City on Saturday could convince striker Pierre-Emerick Aubameyang to commit his future to the north London club.

Aubameyang, 31, scored in either half to fire Arsenal past holders City.

Aubameyang is out of contract at the end of next season and has not yet agreed to an extension.

“Beautiful moments, they are always better than the bad ones,” Arteta said. “As I told you, when I speak with him, he sounds pretty convinced.

“But obviously if he can see that success and the direction we are taking is the right one, I think he will be more positive about it, yes. Hopefully it will help him to be more convinced we are going in the right direction.”