The new Pilgrims arrival played under his boss at Mansfield Town and believes Murray’s attention to detail will enable the club to flourish.
When asked what attracted him to move across Lincolnshire from Gainsborough Trinity to the Jakemans Stadium, Chapman replied: “The manager.
“I think it’s a bigger club, a better club, but mainly the manager really.
“He’s very good. He’s not been able to get his stamp on this team yet, and probably won’t be able to for a while.
“But the hours he puts in and the detail he puts in, it’s unbelievable really, some of the stuff he comes up with.
“I think that as long as everybody stays patient, the players, the fans and the club, you’ll definitely 100 per cent see reward out of Adam Murray.”
Patience, the former Newport County player believes, will be vital for Boston to become competitive in the National League North.
“If that’s not this year I’m very confident that next year I want to be a part of something and take this club back to where it belongs,” he added.
“Having played against the team twice in quick succession I realised it would be a step up in this division and I know that the club and owner want to take the club the right way.”
Chapman had only just joined Trinity before Boston first made an approach for the midfielder in December.
But after turning down that initial offer due to personal reasons, and twice facing the Pilgrims over the festive period - a draw in Boston and a last-gasp defeat at the Northolme - Chapman wasn’t going to say no a second time.
He added: “I’ve only been here a few days but the step up in quality, I can see, individually and collectively.
“It was close to Christmas and my wife had just started working nights. I got a little boy, a four-year-old, and he’s still not full time in school yet.
“The transition of me going from full-time to part-time football just meant it couldn’t happen, as much as I wanted it to.
“I was disappointed but I also wanted to stay at Gainsborough, I don’t want to knock that place or football club. It was purely just timing.”