Gallas, 30, took some time to settle following his move from Stamford Bridge and endured a frustrating spell on the sidelines with injury earlier in the campaign.
Now, though, the France international - said to be attracting interest from AC Milan - is only concerned with what lies ahead for this exciting young team.
"It is not that I was disappointed last season. That was then, I do not think about it. It is the past," Gallas said.
"What I see now is the future, it is now, not yesterday."