Hull FC - blackandwhites.co.uk • Josh Jones

Explaining the situation further, Last added: “I spoke to him during those two weeks of isolation and he was out of breath on the phone, out of breath walking up the stairs and finding it difficult just out in the garden with the kids.

“It is quite scary and we have just got to be conscious of the welfare of the player.

“We have to make sure we don’t push him too hard as that could end up being his undoing.

“It’s a difficult one. It’s not like a hamstring where you know it's going to be four weeks. This is very much seeing what he can tolerate in terms of physical work and what we can actually push.

“He got to the point where he was back in training with us and we were pushing him along thinking he might be back in consideration for playing.

“But then he had an adverse effect on how hard we pushed him and really struggled with some fatigue after it. He was very, very tired and it’s a bit of suck it and see now.”