PHILADELPHIA — Alex Singleton was in high demand following his three standout seasons in the Canadian Football League.

Shortly after helping the Calgary Stampeders win the Grey Cup — the CFL equivalent of the Super Bowl — Singleton went on a busy NFL workout tour. He visited with the Los Angeles Chargers, Arizona Cardinals, Minnesota Vikings and Cleveland Browns before making the decision to sign with the Eagles in January.

“The best fit for me — I thought — was Philly,” Singleton said Friday following the first day of rookie minicamp at Novacare Complex. "That’s how I kind of ended up picking here, as well as them deciding to take the chance.”

The Eagles provided the CFL’s 2017 Most Outstanding Defensive Player with a second chance at his NFL dream.

The Montana State University alum was signed by the Seattle Seahawks as an undrafted free agent in 2015. After being waived during final cuts as a rookie, Singleton had short practice squad stints with the Vikings and New England Patriots.

Singleton joined the CFL in 2016. Since his mother was born in Toronto, the Thousand Oaks, California native qualified for dual citizenship, which made him eligible for the CFL Draft. The Stampeders selected Singleton with the sixth overall pick and he spent three seasons proving Calgary made the right decision.

The two-time CFL all-star produced 311 tackles, four sacks and six forced fumbles on defense. He also collected 17 tackles on special teams.

“To get those reps for three years, I think 50-something games, some guys never get that opportunity,” Singleton said about his time in the CFL. “To have that under my belt and to play that much football, you see things and you learn a lot of things, so I just take that wherever I go and take advantage of it.”

The 6-foot-2, 240-pound linebacker has been participating in the Eagles’ offseason program since its launch in April. Singleton hasn’t played contact football since November but he is getting plenty of mental reps during phase two of the program.

Those mental reps have helped him get acclimated to the Eagles’ defense. While Singleton claims there is little adjustment for linebackers moving from the CFL to the NFL, learning a new defensive system can be a tough task.

Still, Singleton is adjusting well to his new surroundings. He knew what he signed up for when he decided to return to the NFL.

“I could have stayed up in Canada," Singleton said. "It was a big decision to leave a city I fell in love with. You’ve got to take every opportunity like it’s your last, just like it was in 2015, I’m just older and more mature. I kind of understand what happens and how fast it goes and how fast you’ve got to learn.”

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Singleton was a star in the CFL. In Philadelphia, he’s competing to earn a roster spot. Singleton will need to impress the Eagles’ staff during organized team activities, training camp and the preseason to earn a job on the team’s 53-man roster or 10-man practice squad.

This weekend’s rookie minicamp is a preview of things to come for Singleton. While he has three years of CFL experience, Singleton is still just a first-year player in the NFL. He’s competing with the Eagles’ rookie class after spending the last few weeks with the likes of Fletcher Cox, Malik Jackson and Ronald Darby.

Singleton has embraced the extra work. During the early portions of the offseason program, players aren’t allowed to match up during drills. The coaches can’t even pose as route runners under NFL rules.

Due to the limited work in the program, Singleton said he was excited to have three days of competitive workouts in rookie minicamp.

“Now we get the opportunity to go against people," Singleton said. "You kind of get that foot in the door.”

Singleton realizes nothing is guaranteed for him at the NFL level. His CFL résumé doesn’t matter when it comes to his Philadelphia evaluation. The Eagles’ staff wants to see him perform on the field during rookie minicamp and beyond.

“As a young player — still only 25 — there’s so much opportunity in front of you,” Singleton said. “You see guys playing now until 30, 35, almost 40. If I want to be that guy — that’s 15 more years from now — I’ve got to have that competitive drive every day.”