During the final moments of the St Kilda vs West Coast Eagles game in Round 18, Maguire collided with Tyson Stenglein causing a break to both his tibia and fibula.

In the days following the incident, Maguire had a rod inserted into his leg and the club was optimistic he could make his comeback (without any complications) as soon as Round 1, 2007.

Doctors had to cut into his calf numerous times to clear the build-up of blood, with ever-increasing difficulty in repairing the wound.

At the end of the 2007 season it was revealed that after experiencing soreness during training he had once again suffered stress fractures in his foot, preventing him from participating in the majority of the Saints' pre-season.

The St Kilda football manager, Matthew Drain, said that although Maguire most likely would not return in 2009 this may be the best chance of him getting everything right without the pressure of playing and may turn out to be the best thing for him in the long run.