People still don't give up about spreading new rumours about Ronaldo. This time they say that Ronaldo's representatives are in talks with Sporting now. However I have heard before that there is no such transfer to Sporting is likely in the near future for him. Ronaldo shouldn't be this desperate to play for a weaker team to just play in the Champions League. This should stay just a rumour and Ronaldo had better get used to staying already. However it still feels like the rumours won't end until the transfer window closes.
If Ronaldo was supposedly going to leave Man United it would be to club where he'd the get opportunity play champions league and potentially add to his tally, but playing in Sporting doesn't by any means give a better chance of doing much in the competition, that's even if they're able to make it pass the group stage.
Playing in the Europa League with Man Utd would give Ronaldo a better chance the trophy, and at least more personal records than moving to Sporting Lisbon.
It's better for him still stay at manchester united. Leaving MU to the another club didn't mean if he can get a better club. So many big clubs have been rejecting him. He must learn a lesson from there. As long as he will be actively playing for MU and why not? it's better rather than try to be a subtitution only for the another club. He also tried to bring MU to the champion league next season.