Scotland assistant manager John Carver has sent a message to the nation’s Rangers stars that ‘two or three’ spots in the Euro 2024 squad are ‘still up for grabs’. Steve Clarke’s right-hand man has also claimed that there is still plenty of time for someone to come from nowhere like Lawrence Shankland. The Rangers-linked striker – who has fired his way onto the plane to Germany and maybe even into the Scotland starting XI – has been signposted as a point of Tartan Army inspiration. “We have a good idea (who is in the running for the Euro 2024 squad),” said Carver. “But we’re not going to talk a…