Rehabbing Damyean Dotson, who finished the season as the Knicks’ starting shooting guard, believes the club will be fine even without a big free-agent splash.

If the Knicks sign Kevin Durant, he won’t be playing next season anyway because of his torn Achilles. Dotson, who underwent shoulder surgery in mid-May, made big strides in his second season despite playing with what turned out to be a torn labrum.

Dotson believes the young guys are only going to be better and RJ Barrett, their No. 3 pick, will be a boost.

“I’m a young guy still,’’ Dotson told The Post in phone interview Wednesday. “We have a full team of young guys. My teammates Allonzo (Trier), Kev (Kevin Knox) Mitchell (Robinson), RJ (Barrett), we’re rising stars. We can build together and one day become a great team if we work hard keep listening to coach (David Fizdale). All the guys played last year got experience.”

Next training camp, Dotson and Barrett could compete for the starting shooting guard slot.

“I watched him a couple of Duke games,’’ said Dotson, the Knicks’ second-round pick in 2017. “I like his game a lot. He’s explosive, athletic. He’s a good 1, 2 guard. Big strong guy. I think he’ll definitely help us become a better team.”

Dotson has yet to start shooting or doing any on-court work. He got his sling removed one week ago and has started shoulder exercises. He believes he’ll be 100 percent at training camp in late September. “I’m healing fast,’’ Dotson said.

In missing three straight games in December with a sore shoulder, Dotson never thought it was anything too serious. Though he proved himself as a growing “3 and D’’ guy, he saw a shooting dip toward the season’s tail end. Still, he finished with solid numbers (10.7 points, 36.8 percent 3-point shooting). Dotson felt he just wore down after playing so infrequently as a rookie.

“I thought I was just tired, legs, I didn’t think it was my shoulder,’’ Dotson said. “The losing takes its toll after a while. I had no speculation it was my shoulder. I knew it was sore. I played through it.”

The Knicks are expected to exercise his team option in mid-July. After the season, Dotson decided to make sure his shoulder was OK and scheduled an MRI.

He was stunned. “I was like, ‘Oh man, torn labrum, who would’ve known?,”’ said Dotson, who is promoting a new line of hoodies called “Wholeteamdot”. “I played so well, I didn’t think anything was wrong with it. I’m glad I caught it in time and didn’t keep playing with it over the summer. I caught it at the right time.’’