The forward’s’s groin injury robbed him of 39 games in the current campaign.
The Canadian returned to the ice for Sheffield’s ill-fated play offs, scoring in the last game to show his eye for a goal hadn’t gone away.
“I started the season with a flu bug and then two tendons ripped partially away from my pelvic bone” said the 34-year-old.
“It was an extremely frustrating year, it would have been for any athlete.
“I was probably only fit for two weeks of the whole year.
“At the Play Offs I wasn’t really fit enough to take a healthy import slot but when Zack (Fitzgerald) got injured a position opened up and I was happy to come in and do what I could.
“I knew I wouldn’t be able to hit, or stop and start the way I’d like to, but I’d started to feel better in the week and a half leading up to the Play Offs.
“I don’t know what will happen next year. But I want the owner and coaches to know that I am passed the injury now and I will play next year.
“There’s no doubt in my mind there will be no problems going forward, whether it is this team or another.”
Fretter is going to rest for a while before re-building for the 2016-17 season.
“I’d like to return to Sheffield, I had planned to play one more season and then take a decision on what to do moving forward. I’ve not really talked to anybody at the club, but hopefully...”
Fretter, described by Sheffield coach Paul Thompson as one of the finest forwards in the Elite League, will remain studying at Sheffield University until June, while many of his overseas team-mates have headed home.