"We did an army camp when Roy Keane was manager - that was horrendous," he recalled to the Sunday Mercury.
"He took our phones and wallets away from us after saying: 'you've got five minutes to phone home and say you won't be home tonight'.
"It was a brilliant experience but it was tough as well, which is why I said it was so horrendous.
"We had to wear the full army kit with the boots - the staff joined in so it wasn't just us either.
"We were given a couple of strings and a sheet and told 'here you go, here's your shelter for tonight - you need to build it' and we had to sleep in the woods.
"There was no food as such - the army boys killed some chickens and a pig, cut it up and cooked it for us. That was our food - we wanted to call for a pizza.
"We only did it for one night but it felt like a week and t was a shock for everyone. It was a real eye-opener and a tough couple of days. We did have some fun too - we had a go with some machine guns, did some assault courses but I don't think we'll be getting that in Austria.
"It's a bit more reliant and controlled by sports science departments here."