Chelsea have the option to sign Fluminense prospect Ronan, having struck a deal with his employers.
The 16-year-old is co-owned by the west Londoners and the Brazilian club, after an agreement was put in place following Deco's move to Rio de Janeiro.
As Ronan - a highly-rated defender - explains, when Deco left Stamford Bridge last summer, Chelsea were given the opportunity to purchase the rights of three youth team players in order to sweeten the deal.
Chelsea opted to take control of 50 percent of the rights to Ronan and his teammates Wallace and Pernao, who could all move to Stamford Bridge in the future.
"For Deco coming to Fluminense, they needed three players who were based in the juniors," explained Ronan. "They sent a scout to watch the championships and to choose three players - myself and two others (Wallace and Pernao).
"With Deco arriving at the club, they sold 50% of my rights to the English club."
Should the trio of youngsters eventually join Chelsea, they could form part of a Brazilian contingent which already includes David Luis, Ramires and Alex.