Brighton have signed Sunderland midfielder Josh Robertson.

Robertson has signed a deal to 2027 and will initially be registered with the U21 team.

Seagulls U21 coach Shannon Ruth told the club's website: "We're delighted to welcome Josh to the club and are looking forward to working with him.

"He's had a really good education with Sunderland, which was rewarded with his Premier League 2 debut earlier this season.

"He's demonstrated his ability to play in a variety of attacking roles, while also showing his goalscoring threat. We believe he will fit in well with our style of play which will also allow him to show his strengths.

“He will join our under-21 squad and we are excited to see how he progresses in our environment."