Jackson, who was recently on loan at Coventry where he played three games as a substitute, was offered a transfer to the Chinese team, Dalian Wanda. However, the 32-year-old, who played twice for Scotland in last summer's World Cup, decided to return to Glasgow after a trial.
"I went out there on a conditional contract and the Chinese were fantastic and treated me very well. But I am not the best of eaters at the best of times and the food wasn't what I am used to," Jackson said.
"I felt I wasn't eating properly and I wasn't myself. I wanted to come back after a day but I felt I had to give it a go and I lasted eight days. But it wasn't for me and I came back."Reuse content