The Real Madrid superstar began his professional career with the Portuguese club, departing for Manchester United after just one season in the first team.
Ronaldo has since established himself as one of the greatest players to have played the game during his time at the Santiago Bernabeu and Carvalho hopes to see Ronaldo in a Sporting shirt again before he hangs up his boots.
"I would love to [bring Ronaldo back]," he told Marca. "We are making a great effort for players to return, as we saw when we brought Nani back [on loan from United in 2014]. It will happen more.
