The midfielder initially linked up with the Seasiders in November 2022, and following several month-long loan spells, has now been secured until the conclusion of the 2022/23 campaign.
On the extension to the deal, Braithwaite said: “I’ve loved my time here and I’m buzzing to have been a part of it this season.
“The lads are all class and there’s a good togetherness.
“Nath’s trusted me and believed in me which had helped me out massively with what I’m looking to achieve in my career.”
We would like to thank Grimsby Town for their assistance in the deal.