Exciting youngesters

I am 65 I used to go watch Celtic reserves when the first team played away. I watched Dalglish, McGrain, Connelly Davidson, Macari etc When firdt team had injuries I knew who would be called up from reserves. Never had any fears that they would be capable replacements. One thing I think current Celtic have are brilliant youths sadly not tried. I hope these promising lads are kept on long enough for new manager to consider them?