After last year’s Olympics, McClenaghan took a break away from the sport but had recently returned to full-time training and the European Championships were to have been his first major competition since Paris.
The injury is not thought to be serious and McClenaghan will now focus on the World Championships which are due to take place in Jakarta, Indonesia in October.
On his Instagram account, McClenaghan posted: “I tried my best to push through preparation but an injury kept holding me back.
“I chose to prioritise being healthy and recovering for future competitions this year and be sure that I can put out my best work yet.
“I may not be retaining my European title but the path to being the GOAT [greatest of all time] is still very clear.”
