Players were signed, players were sold, Sunderland lost 6-0 to Bolton and head coach Lee Johnson was sacked.
But what happened to the players linked with the Black Cats and the players linked with a move away from the Stadium of Light.
Here, we take a look:
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1. Macauley Bonne
The Sunderland-linked QPR striker joined Ipswich Town on loan. Photo: Gareth Copley
2. Freddie Ladapo
Freddie Ladapo handed in a transfer request in January amidst Sunderland linked but he remains a Rotherham player. Photo: George Wood
3. Dan Jebbison
Sunderland were one again linked with a move for Dan Jebbison but the Sheffield United striker was recalled from Burton Albion by his parent club. Photo: Dan Mullan
4. Patrick Roberts
Patrick Roberts ended up signing for Sunderland during the January transfer window. Photo: Stu Forster