"I came back from Gloucester after a two-year stint and I didn't have a real focus about what I was going to do," he said.
"I came back for a holiday but, as soon as I came into the country, I had a phone call from Kieran Keane, who coached me at the Highlanders, to come to Tasman.
"It worked out really well. I hadn't been to Nelson prior to that. It's a lovely, wee place and the brand of rugby Tasman play is very open and held me in good stead coming up to this competition.
"I'm getting used to the speed of the game again. In the Northern Hemisphere, it's very robotic and structured, whereas here, you get taught to find the space. It took me a bit to get used to - two or three weeks of ITM Cup to play the way I knew I was capable of - but once I got the hang of it, I was fine.
"If you said to me two years ago I would be back for Tasman and playing for the Blues, I probably would have laughed at you.
"That's the way rugby is going. I'm delighted to be invited to play for the Blues. It's a special franchise and I'm looking forward to doing my bit now."
Cowan has already been recognised as a key component in what will be a young backline. He has been added to the Blues' leadership group by new skipper Jerome Kaino and will be keeping the pressure on the other halfbacks Bryn Hall, the incumbent, and Jamison Gibson-Park. All three are in the frame to start against the Chiefs on Saturday at North Harbour Stadium.
The Blues grew in confidence during their match against the Hurricanes, as their early defensive mistakes were ironed out. The victory will be a boost after their thrashing against the Chiefs in Whangarei a week earlier.
Veteran hooker Keven Mealamu, who won't take the field for the Blues until round four, was said to have told a few home truths following that match, and in Cowan, he has an able assistant.
"I'm not really much of a talker but, if a point needs to be made, I will make it," Cowan said.