RANGERS star Alfredo Morelos insists he is "stronger than ever".

The Colombian bagged an impressive double for the Ibrox side last night against Sparta Prague. 

His two goals secured a win for Rangers in Giovanni van Bronckhorst's first game in charge. 

The 25-year-old has been heavily criticised by fans, former players and pundits for his poor form so far this campaign. 

But as he has done so often during his four years at Ibrox, the striker delivered on the European stage to help Rangers qualify for the last-32 of the Europa League. 

Now, taking to social media, Morelos has a defiant message for his critics. 

Accompanying a pic of himself smiling after scoring his first goal last night, he wrote: "Stronger than ever."

He posted the tweet with a buffalo emoji, as well as two footballs and a Colombia flag.

His post has racked up well over 4,000 likes in just over one hour.