The 22-year-old midfielder, on loan at Ibrox from QPR until the end of the season, came close to making it at United under Louis van Gaal.
Goss said: "I felt my breakthrough moment was when I went away with the squad in pre-season in 2015. That was a massive learning curve.
"It taught me a lot and put me in great shape for the start of the season.
"But then around Christmas I picked up my injury which was really frustrating especially as I watched a lot of the other lads getting to step up in the second half of the season. I was buzzing for them but I was unable to enjoy the same experience.
"I fractured my back. I was out for about 12 months, although I feel absolutely fine now.
"The injury was really a gradual build-up. Then after one game I woke up in the morning and I couldn't move.
"I didn't have a clue what was going on. I was in an apartment with one of the other boys and eventually I was able to get into the training ground.
"I am fortunate to still be playing, when you think about it, so I don't look back with any regret."