The 18-year-old has broken into the Gunners' first team this season, making 33 appearances.

The versatile England Under-19 international's previous deal was due to expire next summer, leading to reports he could leave.

Saka tweeted: "Arsenal is my team. I'm so happy to to finally announce my contract extension."

Arsenal's technical director Edu said: "This is so important for us as we move forward as a club.

"This is something everyone involved wanted to happen and we are delighted that Bukayo has signed a new long-term contract."