<text>  The father of Real Madrid youngster Jack Harper has revealed that Spain have been in contact over his sons international status following the 19-year-olds Scotland snub. Harper was a shock omission from Ricky Sbragias Scotland Under 19 squad ahead of key clashes against Austria, Italy and Croatia with the former Sunderland manager citing purely tactical reasons. Now, Harpers father John has warned Scotland that they could be in danger of losing his son to the Spanish national side. Real Madrid youngster Jack Harper has been left out of the latest Scotland Under 19 squad . Scotland Under 19s manager Ricky Sbragia claimed the reasons were purely tactical Among Harpers coaches at Real Madrid are former France international Zinedine Zidane centre He told the Daily Record: The day after Scotland announced the Under 19 squad, and Jack wasnt included, Spain were on the phone asking about his position and international status. Their national academy is just a few miles from Real Madrids own training ground, so they know about Jack because they watch his team often enough. Despite being left out of Sbragias latest UEFA Under 19 Championship squad, Harpers father insists that the Madrid starlet remains committed to Scotland. John added: Jack wants to play for Scotland. Im Scottish, so is his mum and the rest of the family. He is committed to Scotland, but if nothing is happening by the time he is 21 then he will have a decision to make because he has a life and a career to fulfil. Hopefully, it wont come to that. Harpers father was contacted by Spain shortly after his sons international snub . Sbragia also still believes Harper, who was born in Spain, has a big future ahead of him in a Scotland shirt. He said: Hes an exceptionally gifted lad, but sometimes we cant carry him. He can be a luxury sometimes. In some cases, if its going well, he can be a good luxury. Listen, Jacks time will come. The last time I spoke to him, he wanted to really settle in at Real Madrid and find a place there. Thats been a big thing for him. Ive gone with the boys Ive seen most in the last six months. We keep tabs on Jack and see video clips of him. We have people over there who keep their eye on him. There are others Ive left out like Dominic Thomas at Motherwell who will have gripes that theyre not in the squad. But Ive picked a group of 18 which will hopefully do well for us. Its my opinion and Im not saying its right. But the squad Ive picked is an extremely strong one. I can only pick 18 when I really could have picked 26 or 27. Ive gone for a physical side and runners. Hopefully Im right. Its purely tactical and there certainly hasnt been a lack of enthusiasm from Jack about playing for Scotland. Harper is currently midway through a five-year deal with Real Madrid and is tipped to have a big future . 