Dundee United midfielder Stuart Armstrong has been called up to the Scotland squad for the World Cup qualifier against Croatia.
It is the 21-year-old’s first senior call-up and he’ll join the squad alongside Tannadice team-mate Gary Mackay-Steven.
Hibs on-loan striker Leigh Griffiths – who made his debut in a friendly against Luxembourg – has also forced his way into Gordon Strachan’s plans for the match in Zagreb on June 7.
There are also first call-ups for Celtic’s Tony Watt, Gordon Greer of Brighton and Aberdeen’s Ryan Jack.
Griffiths’ performances this season saw him pick up a number of end-of-season awards.
Strachan said: “Over the last couple of seasons he has decided he wants to improve and get better and he has done that.
“People can help you on your way to become better but your career is entirely in your own hands.
“At this moment he is shaping a good career. He was unfortunate, he was very close to being in the squad the last time. This time he has achieved that.”
One notable absentee from the squad is veteran striker Kenny Miller.
Strachan said: “Kenny has been injured for over a month with a hamstring problem. I spoke to Kenny last week and it would be better for him to rest his hamstring because he could come over here and there’s no guarantee that he would play.
“We will see him in the next squad and he’s happy with that.”
As well as Watt, Celtic are represented by skipper Scott Brown and James Forrest, although Charlie Mulgrew and Kris Commons were not included.
Strachan said: “There are five Celtic players that could have been chosen. Charlie Mulgrew is not going to be there because he’s getting married. Charlie and Kris have played a lot of games this year for Celtic.
“I’ve kept in touch with Lenny (Neil Lennon) over the five players and he feels that Forrest, Brown and Watt probably need a game and the other two probably need a rest. That’s the reason behind that.”
Goalkeepers: Matt Gilks (Blackpool), David Marshall (Cardiff), Allan McGregor (Besiktas)
Defenders: Gary Caldwell (Wigan), Danny Fox (Southampton), Gordon Greer (Brighton), Grant Hanley (Blackburn), Alan Hutton (Real Mallorca), Russell Martin (Norwich), Lee Wallace (Rangers), Andy Webster (Hearts), Steven Whittaker (Norwich)
Midfielders: Stuart Armstrong (Dundee Utd), Liam Bridcutt (Brighton), Scott Brown (Celtic), Chris Burke (Birmingham), Craig Conway (Cardiff), James Forrest (Celtic), Ryan Jack (Aberdeen), Gary Mackay-Steven (Dundee Utd), James McArthur (Wigan), James Morrison (West Brom), Steven Naismith (Everton), Robert Snodgrass (Norwich)
Forwards: Leigh Griffiths (Hibernian), Shaun Maloney (Wigan), Jordan Rhodes (Blackburn), Tony Watt (Celtic).