Celtic assistant Johan Mjallby has admitted to regretting his decision to leave the club as a player back in 2004.
The Swedish defender departed Celtic Park to join Spanish side Levante after five-and-a-half-years in Glasgow and suggests it was a difficult task moving on from such a big club to something much smaller.
"It was strange to leave a massive club like Celtic where the demands are so high," said Mjallby in the Sunday Mail.
"I loved that situation but then I signed for a club that was much smaller and without the same facilities or people looking after you.
"It was a wake-up call. It was a new culture, which you must accept, but in a way I regretted it."
