Paul Hanlon started just his third match since the end of September at Ibrox while club captain David Gray made a second-half appearance as a substitute, his first appearance in virtually three months.
"I know that if I continue scoring goals with Rangers, a new opportunity will come".
Look, I'm thinking about the big picture, I'm thinking about where we can take this team and this squad of players.
It took two second half goals from Alfredo Morelos to gain Rangers a win against St. Johnstone on Sunday afternoon.
Rangers have suffered some humiliating defeats at the hands of Celtic in recent years, including a 5-1 mauling at Ibrox in April 2017 and 5-0 thrashing at Parkhead a year later.
"He will miss the Rangers game as far as I am aware".More news: Taliban welcomes partial United States withdrawal from Afghanistan
More news: Use Christmas to embrace Jesus Christ - CACI
More news: EPL: Hazard 'agrees deal' to leave Chelsea for Real Madrid
The former HJK Helsinki player knows he needs to remain in the Colombian worldwide set-up if he wants to get the work permit he would require to play in England.
Steven Gerrard will leave it late before deciding whether to pitch any of Rangers' walking wounded into battle with Celtic. Sometimes you get to this point in December and the players are a bit leggy and the football is not so good and we're not compact enough.
"At this moment in time he's due to play his last game for us away at Aberdeen and then he's due to fly out so that would mean him missing the last game (before the Premiership winter break)".
"We can feel sorry for ourselves and we mope around, or we regroup and dust ourselves down and get ready for a huge game and try flip the feeling of how we feel now".
"It couldn't have been any worse", said Gerrard.
He said: "We just have to approach the game as we always do with our own way of working, respect Rangers are a good team, some very good results this year, and we will give them the respect that they deserve, as we do every team, and look to focus on our own game, look to play well and get a win". Shankland has netted 57 goals in less than 18 months at Somerset Park and is arguably one of the most risky forwards in the Scottish game.