Stuart Kettlewell has been waxing lyrical about Cameron Carter-Vickers this week as the Motherwell manager cast his eye over the Celtic team. Kettlewell watched his side go down to a 3-1 defeat to Celtic just under two weeks ago and the ‘Well gaffer couldn’t help but admire the performance of the US defender. Carter-Vickers came on as a second-half substitute at time when Celtic were struggling defensively. Motherwell were continually catching us out with their pace as Stephen Welsh and Liam Scales struggled against Theo Bair. But the introduction of Carter-Vickers changed all that and Kettlew…