The defender left Manchester United at the end of his contract in the summer and has been weighing up his future.
After training with the Championship side, he has agreed to link up with former Reds coach Kieran McKenna at Portman Road, as the Tractor Boys look to build on an impressive start to the season.
McKenna has already raided Old Trafford for the services of Brandon Williams, after the full-back sealed a season-long loan move to Suffolk.
Axel was a popular member of the squad at United after breaking through the Academy and showing his leadership qualities and defensive prowess.