Cristiano Ronaldo made a name for himself as one of the most prolific young players in Manchester United's storied history. Now, as a member of Real Madrid, he is reportedly persuading a veteran teammate to not make the move to Old Trafford.

Sergio Ramos, who joined Real Madrid from Sevilla in 2005, could be on his way out of the Santiago Bernabeu and recent reports have suggested that the 29-year-old right back is headed to Manchester United in a blockbuster deal. But according to Daily Mirror, the two sides are nowhere near a finalized deal, with United offering £35 million and Madrid expecting £65 million. 

It's possible, however, that Ronaldo senses that a deal for his friend might be imminent. Spanish publication AS reported that Ronaldo paused his holiday in Miami to step in and block the move. Ronaldo has always been a firm admirer of what Ramos brings to Real Madrid, and no doubt sees his exit as a major setback for the club. Ronaldo and Ramos are also considered good friends, having played together since 2009.

Ramos and Real Madrid management have reportedly been on bad terms due to contract extension talks, and with Ramos failing to deny that he could possibly make a move to rival Barcelona. Manchester United and Real Madrid have also been in discussion about David De Gea. It seems like a foregone conclusion that the star goalkeeper will leave Manchester for Madrid, and it's possible the two clubs have combined their negotiations to include Ramos. 

While Ronaldo would certainly appreciate the addition of De Gea, he knows the benefit of Ramos, who has proven to be one of the best defenders in the world. Los Blancos recently lost defensive midfielder Sami Khedira to Juventus, and there were already some questions involving the team's defense in 2014-2015.

Real Madrid are also coming off a disappointing season, by their standards, as they watched Barcelona complete the treble. Anything less than a strong upgrade from last season's roster might seriously concern Ronaldo, who appears more intent than ever to win trophies after turning 30 years old in February. The Portuguese superstar has been rumored to be a Paris Saint-Germain target, and could be tempted to force a move out of Madrid if things don't work out under new manager Rafael Benitez.

Meanwhile, Spanish media outlet Marca reported that Real Madrid may use the fees they could receive from Ramos to add Nicolas Otamendi. The 27-year-old center back has performed well in La Liga, and is currently on Argentina's Copa America roster.