The FC Halifax Town attacker has agreed a two-year deal at Mill Farm.
Now the 26-year-old is desperate for a crack at the top end of the National League after Dave Challinor struck a deal.
“There’s a belief that the club can make that step up to the next level, and that was a big part behind the move,” said Kosylo on the club’s website.
“I’ve always had the desire to push on to the next level, and Fylde have been a club going in the right direction, and were obviously close to going up this season.
“Fylde have been known for playing good football, and trying to break through the lines – which is obviously great for the attacking players like myself.”
Challinor has had a busy May - defeated in the National League promotion final, returning to Wembley and winning the FA Trophy and already signing three players.
“He’s a player who’s attracted a lot of attention at this level, in a team that hasn’t been up the top end – but he’s always been the standout player,” he said.
“Lots of boxes are ticked in terms of scoring goals, creating goals, and running in behind, as well as taking players on.”