The 21-year-old left for Layer Road at the start of last season as Phil Parkinson's side surpassed many peopleÃ¢â‚¬â„¢s expectations by going on to win promotion to the Championship.
There is no doubt 'Yeatesy' played a key part in their rise, missing only the final two league games of the season, after suffering a dislocated shoulder, while he also weighed in with eight goals.
"When I sit down and look back, IÃ¢â‚¬â„¢ve got to be proud of what I have done. I've gone down there and myself and Chris Iwelumo were the only additions they made from the squad they had the year before.
"So for this team to finish second from fourteenth the year before I've got to be happy with myself, considering many were touting them to go down. ItÃ¢â‚¬â„¢s just unbelievable that they will be playing Championship football next season.
"I knew there was a good bunch of lads there and that I would enjoy it. Johnnie Jackson has played there before and he told me that the gaffer is a top man and I have enjoyed it massively. I'll pop back down there and visit a few of the lads.
"But it's gone now. They are up and I'm sure everyone will be looking forward to pre-season and they will work extra hard because it will be tough in the Championship.
"I'm back here at Tottenham now and hopefully my injury will heal quickly so I can be back running for pre-season."
Mark Yeates admits his year on loan with Colchester has proven to be time well spent away from White Hart Lane.