Lockyer has had an Implantable Cardioverter Defibrillator device fitted, which is a small battery-powered tool placed in the chest that detects and stops irregular heartbeats. To restore a regular heart rhythm, it delivers an electric shock. Manchester United midfielder Christian Eriksen has been fitted with the device and has been able to continue playing. However, Luton manager Rob Edwards says it is "too early to tell" what impact this cardiac arrest will have on his career.