The Magpies take on the Seagulls at St. James' Park on Saturday, as Chris Hughton's Brighton & Hove Albion travel to Tyneside for a 3pm (BST) kick-off.
And while several of Rafa Benítez's players have been on international duty over the last few days, the majority of the squad were in training at United's Benton base on Wednesday.
Florian Lejeune isn't yet fit enough to train fully as he recovers from a knee injury, but was able to take part in the gym session, while Paul Dummett continues to make good progress after missing United's last two games.