I've had a diminishing interest in the national team in recent years but would be good to see McKenna in there and a partnership with Souttar could be the way ahead for years to come - they've experience of playing together in the U21 team so I'd punt them both in together in these friendlys and see how they fair - the other central defence options are pretty poor.
Lot of fuss being made over this McTominay chap - never heard of him or seen him play so will reserve judgement. However, if McLeish had to go and beg him to play for Scotland rather than England, I find that quite embarrassing - lets have a team of guys who are actually proud to play for Scotland and not just using us as a route into international football because they know they'll never be good enough to play for England. I'm convinced that's one of the reasons we've been so gash over the last 15-20 years.