Jackie McNamara has heralded the impact of Rangers midfielder Scott Arfield after his substitute appearance in the 2-0 win over Porto.

Speaking exclusively to Football Insider assistant editor Russell Edge, the former Scotland international singled out the Canadian international for the manner in which he affected the game, Steven Gerrard starting with the 31-year-old on the bench.

Goals from Alfredo Morelos and Steven Davis secured all three points for the Light Blues in front of the Ibrox faithful, with both coming after Arfield’s introduction 65 minutes in.

Having seen the former Burnley man benched for the Gers’ League Cup win over Hearts at the weekend, McNamara was impressed by the impact that Arfield had on the game and insists he is the sort of character needed for the big occasion.

McNamara told Football Insider: “It was quite an energetic game, Porto are no mugs so it was a great performance and a great result. Arfield did very well when he came on. 

“With his squad, he’ll want to look after everybody and make sure everybody’s ready and not overplayed. When you’re winning, it feels great, everybody’s happy.”

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Arfield has played a total of 23 times already for the Light Blues this season, with nine out his 10 league appearances coming among the starting XI under Steven Gerrard.

Rangers’ last game before the upcoming international break sees them travel to a Livingston side sitting seventh in the Premiership table, with the West Lothian outfit the only side to have inflicted defeat on title hopefuls Celtic this season.

In other Rangers news, Football Insider can reveal that the coaching staff are concerned about one player’s state of mind.