By Dominic Toner

Celtic manager Brendan Rodgers hailed the impact of Leigh Griffiths and Stuart Armstrong against Rangers.

The pair were both used as second-half substitutes on Sunday and helped the club book their place in the Scottish League Cup final against Aberdeen.

Celtic completed a narrow 1-0 victory against Rangers in the semi-final, with in-form striker Moussa Dembele scoring the decisive goal.

Griffiths, 26, put in a perfect cross for his team-mate Dembele in the 87th minute and the forward flicked the ball into the net.

Armstrong also made a positive contribution off the bench and added some extra quality and urgency in the midfield.

Rodgers praised the two substitutes and claimed they added extra tempo to the game.

“Leigh Griffiths and Stuart Armstrong haven’t played as much but came into the game and pick dup the tempo straight away,” Rodgers said, as quoted by the club’s official Twitter account.

Both Griffiths and Armstrong have been limited to several substitute appearances this season and will hope to be in contention for the club’s league match against Ross County on Wednesday.

Griffiths has struggled to land a starting role this season and completed 90 minutes in just five of his 15 appearances, with Dembele being the first-choice option under Rodgers.

The striker was in phenomenal form last season and fired Celtic to the league title, scoring 40 goals in 51 appearances across all competitions.

Armstrong has completed just 90 minutes in his 12 appearances this season and will want to force his way back into the side.

In other Celtic news, Dembele has given his verdict following his winning goal against Rangers.