Middlesbrough could see Johnson as an option for them down the line.
He will initially link up with their Under-21’s with a view to breaking into the first-team later.
Eastbourne Borough snapped him up last July to bolster their ranks. He has since made 24 appearances in all competitions and has chipped in with one goal and two assists.
After joining the sixth tier outfit, he told their website: “It is a massive club, so coming here is very exciting. You want to express yourself and give your best for the team. The size and ambition of the club definitely attracted me.
“It’s a massive jump, but learning things tactically from the coaches allows you to simplify your game and understand your role. With such good quality coaches at Eastbourne, it makes the transition easier.”
He added: “A few people say I’m similar to Kobbie Mainoo. Off the ball, sometimes I can be like (N’Golo) Kante. It’s not a bad mix.”
Eastbourne Borough are currently sat in 6th place in the league and are only three points off Boreham Wood at the top.
It will be a big blow to lose Johnson mid-way through a campaign. However, it is a hard for them to stand in the way of a move to Boro.
What now for Middlesbrough target Brayden Johnson?
Middlesbrough will hope Johnson can hit the ground running with their development squad.
Carrick’s men are back in action this weekend with an away trip to Preston North End.