Waghorn has been ruled out for six to eight weeks due to a knee injury (click here to read more).
The 26-year-old forward has been arguably Rangers’ best player so far this season. The former Sunderland and Leicester City man has scored 28 goals in all competitions for the Gers so far this campaign.
Wilson, who joined Rangers in the summer of 2015, has backed Clark to successfully step in for Waghorn. The Scottish striker is 24 years of age and has been on the books of the Glasgow giants since 2013.
“Nick has been training well all season and working really hard,” Wilson told Rangers’ official website. “I’ve got no doubt it has been disappointing for him but when called upon he’s scored important goals for us.”
Rangers are at the top of the Scottish Championship table at the moment with 60 points from 24 matches.
The Glasgow giants are eight points clear of second-placed Hibernian, who have a game in hand.
The Gers will take on Queen of the South away from home at Palmerston Park in the Scottish Championship on Sunday evening.