Chelsea are the latest side to show an interest in promising Sporting Lisbon midfielder William Carvalho, [football] direct news understands. The 21-year-old Portuguese international is widely regarded as one of the most exciting young players in Europe at the moment, and has been tracked by the likes of Manchester United and Inter Milan in recent months.googletag.cmd.push(function() { googletag.display(“div-gpt-ad-1389116196215-0”); });With Chelsea possibly set to make some changes in midfield this summer, with John Obi Mikel looking likely to leave, a defensive midfielder could be a useful addition to Jose Mourinho’s squad. The former Real Madrid boss is known to keep a keen eye on the best up-and-coming talent from his native Portugal, and Carvalho may favour a move to Stamford Bridge over others, particularly as United may not be able to offer Champions League football next season. My understanding is that we’re looking to beat United and other clubs to Carvalho, a Chelsea insider revealed. “Mourinho’s a big fan and he could make some changes in midfield this summer.”Read more Chelsea transfer news.