Newcastle have signed Arsenal midfielder Joe Willock on loan while full-back DeAndre Yedlin has completed a move to Turkish side Galatasaray.
Willock, 21, has featured as a substitute for the Gunners in recent months and last started a Premier League game in November.
Yedlin, 27, was surplus to requirements as Newcastle have two other right-backs in Javier Manquillo and Emil Krafth.
The United States defender joined the Magpies from Tottenham in 2016.
Willock promised to work “his socks off for the team” after arriving in the north east of England.
He added: “This is a club with a massive history that I’ve grown up watching. I can’t wait to see everyone and be part of the Newcastle family.”
Newcastle boss Steve Bruce had also confirmed his interest in Leicester City’s Hamza Choudhury but was unable to complete a deal for the 23-year-old midfielder.
Yedlin made six Premier League appearances this season and played 125 times for the club in total.
Bruce said: “Quite simply we have had three right-backs at the club now and DeAndre is suited to wing-back. It’s been no secret we have changed to a back four.
“I want to wish him best of luck playing in Turkey for a huge club like Galatasaray. He’s a great professional, and a great lad.
“Sometimes you have to let one out to bring somebody in.”
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