Tom Rogic starts his first Celtic match in four months today as the hoops face Ross County in Dingwall.
With back-to-back matches coming up against Sevco Rodgers is keen to get his top side back in action.
Central defence seems to be an area that the hoops boss is undecided on with three players pushing for two places.
Dedryck Boyata played in just one match before the winter break but now appears to be the first pick with Jozo Simunovic and Erik Sviatchenko competing for the other place.
Today the Celtic boss will look at another variation with Simunovic, Sviatchenko and Tierney forming the backline although Mikael Lustig will be an almost certain starter at Hampden.
In midfield the return of Tom Rogic provides more options but it seems likely that the Australian will start the semi-final on the bench.
Moussa Dembele made a welcome return to action last week as a substitute against Kilmarnock with Leigh Griffiths back in contention after being injured on Scotland duty.
CELTIC: Gordon; Simunovic, Sviatchenko, Tierney; Brown, Armstrong, Rogic, McGregor; Forest, Dembele Sinclair.
SUBS: Bailly, Toure, Izaguirre, Griffiths, Gamboa, Roberts, Kouassi