According to the UK Sun newspaper, the singer has written a track for the group, whose comeback was announced over the weekend.
Fans went into meltdown when it emerged that the band would be getting back together, minus Brian McFadden, and it seems people are more than ready to hear new music from Shane, Kian, Nicky and Mark after six years without them.
An insider has claimed it's a huge coup for Westlife to get Ed on board as he'll bring a contemporary edge and will help to make their reunion "huge".
Cover image via @teddysphotos/Instagram