The Jags midfielder has landed the SPFL Young Player of the Month gong for August after a string of superb games for Alan Archibald's side in the opening weeks of the new campaign.
Such were the quality of the Jags' showings in the first few games of the SPFL Premiership, summer signing Osbourne had to wait patiently for his chance to play for the Firhill outfit.
The 27-year-old will come up against former club Aberdeen when the Dons come to town this afternoon and Osbourne has hailed his midfield counterparts for their stunning form so far.
He said: "I've come into a winning team and the players are really expressing themselves and playing with no fear. That's the difference between us and Aberdeen.
"The team has also gelled and have a certain way of playing. Aberdeen are still trying to find that.
"I'd never heard of Partick Thistle before I joined them but Banzo (Steven) Lawless and JC (James Craigen) are very talented young players who are comfortable on the ball.
"If we'd have picked up another couple of wins, Bannigan could maybe have won player of the month, rather than just young player."
While Thistle's aim this season is to avoid relegation, Aberdeen have far loftier ambitions following the arrival of Derek McInnes as boss and a host of summer signings.
The Dons have been tipped to finish best of the rest this term and Osbourne knows Thistle face a tough test against his former side this afternoon as he bids to earn another first team start for Archibald's men.
He said: "I obviously had to sit out the first few games because the team was doing so well, and I got my opportunity through injuries. I've enjoyed it so far.
"It should be a good, hard game against Aberdeen.
"They're one of the best teams in our league, but we're capable of getting something good from it.
"And with their management and players, as well as the ones they already had on board, they'll be a force to be reckoned with this season.
"Me going back in against my old team is very exciting. Hopefully I'll get a chance to play."
Osbourne upset the Pittodrie punters by joining the Jags this summer just weeks after leaving Aberdeen to try and win a move south of the border to be closer to his family in Birmingham.
He said: "I'm not sure how the Aberdeen fans will react. I've never had any grief from them.
"I left the club to get back closer to my home in Birmingham, and the opportunities weren't there for me.
"I loved Aberdeen and if I'd known in the summer that I wouldn't have been able to get anything closer to home, I would have stayed there.
"I spoke to the manager and he would have allowed me to stay but I'd already decided to move back to England. But Thistle has worked out fine for me and all that is in the past."