The former Tottenham defender can be forgiven for wondering what might have been as Everton visit the KC Stadium tomorrow.
If things had gone differently, the 28-year-old could have been lining up for the Toffees.
But he told the Hull Daily Mail: "I went to Everton with an injury from Spurs and it took most of the time I was there to get it right, so I never got an opportunity.
"I wasn't playing at Spurs at the time and thought it was a good opportunity to maybe play some games. It didn't turn out that way but you learn from things like that. These experiences happen.
"I'm not the first and I won't be the last that that kind of thing happens to."
Everton finished fifth and reached the FA Cup final last season, earning qualification for Europe in the process.
Gardner might feel he could have been involved in that had things worked out differently but that is not a thought he wants to entertain.
"Everyone wants to play in Europe, as I did at Spurs," he said. "Everyone wants to play in it every year but at the minute I'm happy I'm fit and playing in a Premier League side.
"I'm at a good club and I can't moan."