Usman Khawaja had been fine-tuning for the Matador One-Day Cup hitting a watchful 40 for Valleys in Queensland grade cricket on Sunday when Rod Marsh came calling.

Australia's chairman of selectors was ringing to deliver the good news that a Test career that had stalled two years ago was to be resurrected, confirming the classy left-hander had been called up for the two-Test tour of Bangladesh.

Quick Single: Australia's Test squad for Bangladesh

"We came off for lunch, I saw I had a missed call from Rod Marsh, I called him back and he gave me the good news," Khawaja recounted.

"So I was pretty excited, but then I had to go out and field for 50 overs. It took my mind off it a little bit but it was a nice afternoon."

So nice, Khawaja bowled himself for six overs, picking up a handy 2-32.

Very excited to be called up for Aus. Thnks 2 my fam, friends, team mates, staff n fans 4 all ur support this past yr pic.twitter.com/QwghwmFa7B — Usman Khawaja (@Uz_Khawaja) September 14, 2015

There's little doubt Khawaja is enjoying his cricket at the moment. Every innings is a blessing after the long, idle days of recuperation and rehabilitation following knee surgery that kept him sidelined for seven months.

In a purple patch of form last summer he had looked to be on track to be banging on the door for a spot in Australia's World Cup squad until a mishap at training with the Sydney Thunder saw him rupture his ACL.

"I felt like I was a million miles off just playing cricket," Khawaja said.

"You never cater for being off for more than a few weeks, but I got told I was out for six to nine months which was tough to hear. For me it was just about getting back on the park.

"A lot of hard work has gone in from where I was nine months ago. To be honest I'm just happy to be playing cricket again and this (Test selection) is a bit of a bonus."

Khawaja sidelined after knee surgery last December // Getty

In nine Tests, Khawaja averages 25.13, but the left-hander was given a ringing endorsement by Australia head coach Darren Lehmann, who signalled him out as a potential cornerstone of the Australian Test top-order for the long term.

"The way he's played over the past few years I think he's showed (he's ready)," Lehmann said.

"He went on the 2013 Ashes tour and probably didn't play as well as he would have liked. But he's gone back and done exactly what, as a coach (I want to see). He's changed his game a little bit and delivered what we wanted, which was a thirst of runs in all formats.

"We think he can actually play a lot of Test cricket for us. He'll get a good opportunity at it, a good run and he's one of the guys we talked about at the end of the (Ashes) Test series."

Quick Single: Lehmann puts faith in Khawaja

That sort of pump-up from the national coach would fill any player with confidence but Khawaja, while admitting it's nice to hear, isn't getting too caught up in it.

"It makes no difference to me," he said matter-of-factly. "I've had that chance the last couple of times with the exact same thing but it hasn't worked out.

"So for me it's about going out there, watching the ball, hitting the ball when I bat, and doing what I can in the field to help my team out.

"I'm a big-picture kind of guy, there's a lot to look forward to, (but) I'm just enjoying my cricket at the moment, I'm really happy to just be out there again."

It's the sort of perspective and maturity Australia is looking for in a Test XI that is one of the least experienced in four decades.

"I hope I've improved, it's been two years (since his last Test)," Khawaja added.

Khawaja in action on the 2013 Ashes tour // Getty

"You're always trying to improve. I'd like to think I am (a better player now) but at the same time there's always hard work to be done. Talk is cheap. You've got to go out there, score runs, take catches for you team and contribute. That's all you can do."

For now, Queensland need to find a new captain for the Matador Cup. And Khawaja will switch his focus from swatting the white ball over the fence to facing spinners on Cricket Australia's purpose-built hybrid spin pitch at Brisbane's Bupa National Cricket Centre.

"The spinning wicket is really good fun," he said. "It's tough work, it feels like a day four or day five Chennai wicket to be honest.

"It's tough, the spinners love bowling on it, it's a contest, and I'll definitely be hitting as many balls as I can."

Watch: Khawaja and Sandhu ham it up on the India A tour