The Peterborough United forward has lifted the lid on the transfer saga that saw him telling Darren Ferguson that he never wanted to play for him again.
The English League One side also slammed Celtic for unsettling their player on a day of a game.
Celtic had three offers - ranging from £1.2m to £2.1m - turned down by Peterborough on transfer deadline day on August 31.
Boyhood Celtic fan Tomlin's "head was all over the place" and he was substituted at half-time during their loss to Crawley.
Recalling an emotional weekend, the 24-year-old, who is recovering from an ankle ligament injury said: "I woke up that Saturday morning and, as usual, I couldn't wait for the game.
"But then my phone rang and I was told that Celtic had bid £1.2m for me. I told him [Ferguson] I couldn't think straight because of what was going on, but he straight away told me to forget it as the bids weren't big enough and that I wouldn't be going anywhere."
Tomlin, who has been linked with a January switch to Celtic Park, added: "This was something I'd dreamt of and I just thought the manager was being horrible towards me. We had a big row and I told the manager I'd never play for him again."