"The 24-year-old becomes the Magpies' fourth first team addition of the summer after penning a long-term deal at St. James' Park," said the club on their website, without specifying the length of the contract or the transfer fee.

British media reported the Magpies paid Villa £39 million ($52.9 million), with a further £4m in potential add-ons.

Ramsey came through the youth system at Villa and made 167 appearances for the club. Last season, despite a mid-campaign hamstring injury, he played in 46 games, including 10 in the Champions League, but was often used off the bench.

Newcastle pipped Villa to a Champions League berth at the end of last season. The two clubs opened their new campaigns by drawing 0-0 on Saturday.

Ramsey was not part of the Villa squad for the game.

"It's been a mad two or three days, but I'm really happy to be here and I can't wait to get started," said Ramsey on Newcastle's website.

The club have signed Anthony Elanga, Aaron Ramsdale and Malick Thiaw, but have struggled to land other targets.

Star striker Alexander Isak was not in the squad on Saturday following his reaction to the club turning down a bid from Liverpool.

Coach Eddie Howe said it has been a "stressful" summer, but on Sunday was happy with his new signing.

"Jacob is another fantastic addition to our squad," said Howe. "His qualities will bring us something different on the pitch and he fits the profile of being young and hungry to develop, but also with a wealth of Premier League football."

Ramsey was part of England's European Under-21 Championship-winning squad in 2023 alongside new team-mate Anthony Gordon.