The Colombia forward has fully recovered from a thigh injury which has kept him out since March last season and which required surgery.
Boss Giovanni van Bronckhorst has included him in the Gers squad for the first home cinch Premiership match of the campaign.
Morelos missed the finale to last season, including the Europa League final defeat to Eintracht Frankfurt in Seville and the Scottish Cup final win against Hearts at Hampden Park.
However, the Gers striker and fans favourite is ready to contribute again. Van Bronckhorst told Rangers TV: “The biggest change will be that Alfredo will be in the squad. “He has been training really hard the last weeks with the squad and we think he is ready to be in the squad for tomorrow and hopefully he can play some minutes as well.” The Gers fans need some positive news following the 2-0 defeat by Union Saint-Gilloise in the first leg of their Champions League third qualifying match in Belgium on Tuesday night – and Van Bronckhorst knows it.