Lallana has helped Brighton to seventh in the Premier League this season and, overall, has made 74 appearances for the club, scoring four goals.

"To know how much the club itself wanted me to stay was very touching," said Lallana.

"I know how smart and strategic these guys are. To know the value they placed on what I can bring really meant a lot.

"Secondly, it was the club itself. From top to bottom this place is a beacon of good practice, and I want to be part of it."

Brighton boss Roberto de Zerbi said: "I am absolutely delighted for Adam, it is an honour for me and the club to continue working with him."