The European champions offered the 16-year-old Lleida star a trial and were impressed enough to offer him a contract, beating Barcelona and Real Madrid to his signature.
"When my representative told me I thought it was a joke," admitted Roque.
"When they tell you scouts from Barca or
"It's a great opportunity for me. Everyone who likes football dreams about something like this and I can't let the chance pass.
"When I told them (my team-mates) they did not believe me, they thought I was having a joke and I had to tell them four or five times before they took me seriously.
"The experience (at Anfield) was good because the first-team players there are close to reserves and there is constant contact between them," he continued.
"What's more they use them because there are many competitions to play.
"Living in