The 26-year-old, who represented England at youth level, is eligible to play for them through his paternal grandfather.
As a result, manager Clarke is keen to get him into the team as soon as possible, having visited the City Ground to watch him play against Nottingham Forest in the FA Cup earlier this month.
He hasn't made this month's squad as they await final clearance, although Town team-mate [Cieran Slicker](https://www.eadt.co.uk/sport/24998349.ipswich-town-cieran-slicker-makes-senior-scotland-squad-march/) has been called up.
“George will come if we get the paperwork through," Clarke said. "If we had got it through for this camp, he would have been in this squad.
“He wants to play international football. We offer him that chance. You can never say 100 percent, but I’ll say I’m 99 percent convinced that, as and when George is selected for the squad, he will turn up.
"We had our first conversation about a month ago. He comes across as a very nice person. He wants to be here.”
Steve Clarke watched the 26-year-old play in the FA Cup against Nottingham Forest _(Image: PA)_
[FIFA's Change of Association Platform](https://knowledge.fifa.com/change-of-association-platform) now includes Hirst's switch to Scotland, which suggests that he could be available to represent them soon.
Clarke confirmed that he could be named in the squad in the coming days, with a two-legged Nations League tie against Greece on the horizon, but it would probably rely on someone else withdrawing through injury.
“It’s possible he could still be added to this squad," the manager confirmed. "There was a delay in the paperwork.
“There are still club games to go before we meet up as a squad, there is always the chance of someone else getting injured. Hopefully not because we have suffered enough injuries.
“I’ve watched him recently. He is in and out of the Ipswich team, he has played in the cup games. He is a player who would help give us more depth to that position if we can do it.”
If Hirst isn't involved with Scotland this month, he could earn his first call-up in June, when they face Iceland and Liechtenstein in summer friendlies.