Gibson will face his former teammates for the first time since his shock departure from Arden Street in September and resultant trade to the Hawks in October.
Pratt would not be drawn on whether there could be any remaining animosity towards Gibson, who played 65 games in four seasons for North, but said the club was well and truly over the episode.
"People leave footy clubs. People come and go. He's gone. We're not really worried about it anymore," he said.
"Everyone's moved on, he's moved on and we're happy with what we're doing now."
Pratt said he expected Gibson to play on Drew Petrie or David Hale, who will again hold the key positions in a forward line including strong marking target Aaron Edwards and the returning Josh Smith.
"We'll let him worry about that and we'll just worry about we're doing," he said.
The issue is a lot closer to home for Pratt, who has continued to live with Gibson since the trade but will move out this weekend ahead of the season starting in earnest.
"He's a mate of mine," Pratt said. "He's mates with a lot of guys here ... but he's an opposition player.
"We're going to treat him like every other Hawthorn player. He doesn't get any free ride or any harder ride."
Pratt said he would be searching for a better performance against the Hawks after playing half of North's first NAB Cup game against Geelong and admittedly struggling in last week's loss to Fremantle.
He added that he felt the defensive side of his game was coming together well but that his disposal needed to improve.
"I'm still knocking a few pieces back into place. It was the first full pre-season I've done in the last couple of years," he said.
"We're only two games in, so it's not panic stations or anything like that."
The 26-year-old is also aware of the tough selection decisions awaiting his coaches ahead of North's season opener against Port Adelaide on March 28.
Centre half-back Nathan Grima (broken finger) trained strongly on Wednesday in his recovery from injury while full-back Scott Thompson is settled in his position.
Emerging talls Lachlan Hansen and Robbie Tarrant, and second-year player Sam Wright, continue to be given opportunities in the pre-season competition.
Michael Firrito, who spent last season in the midfield, will also command a spot in the back six.
"It's going to be tight, which is good," Pratt said. "We haven't had a lot of depth down back in recent years.
"There's probably about 10 blokes fighting for maybe seven positions. It's positive competition."
Pratt said urging from his coach Brad Scott will see him revisit the physical and aggressive side of his game which complemented his career-best form in 2007 and 2008.
"That's what gets me up and going and I'm not going to change my game again - like I did last year - to please people," he said.
