Borough have snapped up Jack Currie on a season-long loan from League One side AFC Wimbledon.
The teenager came through the Dons academy set up from the age of 10 and was named on the first team bench last season.
The Sports boss said: ""We're absolutely delighted to have secured Jack for the season," said the Sports boss.
"As we have a glimpse of already, Jack is a player with immense potential and we are all looking forward to working with him.
"A massive thanks to Michael Hamilton, Robbo and everyone at AFC Wimbledon for making this move possible."
AFC Wimbledon's loans manager Hamilton said: "Jack has already trained and played with Eastbourne for the last few weeks and the feedback from their manager Danny Bloor has been brilliant. I'd like to thank Dannny for his professionalism.
"Now the challenge is for Jack to pick up from the promising performances he displayed during last season’s loans, and maintain it consistently for the duration of the season."