Fabian Delph has claimed that he has already learned more during his short time working under Pep Guardiola at Manchester City than throughout the rest of his career.
The England international missed large parts of last season under former boss Manuel Pellegrini due to a succession of injury problems, which led to suggestions of a summer exit.
Delph is perfectly happy with life at the Etihad Stadium, though, and hopes to continue improving under "perfectionist" Guardiola heading into the new campaign.
"When I first met the new manager, I did feel a bit of a lift," he told BBC Sport. "He's been fantastic from day one, knew everybody's names from day one.
"I'd say I've learnt more in these three weeks than I have throughout my whole career. The systems that he's trying to implement are unbelievable, the intensity that he's brought to the group is frightening.
"He's a perfectionist and, to be fair, everyone is pulling together and trying to implement what he wants us to do on the training field. It's been a big learning curve. It's been amazing for me and I'm really looking forward to the rest of the season."
Delph featured 17 times for City overall in the Premier League last season, starting eight of those games.