Craig Cathcart hopes to prove to Sir Alex Ferguson that it was a mistake to let him leave Manchester United last summer.
Cathcart was regarded as an exciting prospect by United after progressing through the youth ranks, but was never quite able to make a first-team breakthrough.
Having impressed during loan spells with Royal Antwerp, Plymouth and Watford, he was allowed to join Blackpool on a permanent basis before the start of the season.
He has continued to catch the eye at the heart of the Seasiders defence and believes he can go from strength to strength for the rest of his career.
"In the old days, they always claimed that if you left United the only way was down," the 21-year-old said in The Sun.
"Some people even looked on it as the end of the world. The end of the dream, especially for a young guy like me.
"But loads of players leave United and go on to have great careers.
"I'm not an emotional or sentimental person anyway. I didn't feel hurt in the slightest.
"Even though United had Vidic, Ferdinand, O'Shea and my old Northern Ireland mate Jonny Evans, I still thought there might be a chance.
"But when they signed Chris Smalling from Fulham, I realised the writing was on the wall.
"So when Ian Holloway said he was giving me the opportunity to play first-team football in the Premier League, I didn't think twice."
Cathcart will have the opportunity to show his former employers what they are missing when Blackpool face Manchester United on Tuesday, and he is determined to help his side spring a surprise.
"Yes, there will be a few nerves for me when I see Rooney, Berbatov and the rest of the lads run out," he admitted.
"But, as I said, not too much emotion. Well, apart from trying to prove they should never have let me go.
"We have surprised a few sides this season but, even now, the only thing we are thinking about is avoiding relegation.
"Yes, everyone is talking about United setting records.
"But the greatest bit of history will be us staying up, not United going through the whole season unbeaten."