Demba Ba’s recent form for Chelsea could open the door for on-loan striker Romelu Lukaku to leave Stamford Bridge on a permanent basis. Ba has scored four in his last five appearances in all competitions, including vital goals in the Champions League against Paris Saint-Germain and on Sunday at Swansea City to keep Chelsea’s Premier League title hopes alive.[football] direct news understands that Chelsea are reconsidering whether they wish to sell the 28-year-old in the summer, when they were previously willing to allow Ba to move on, and that could open the door for Lukaku to leave on a permanent deal. Lukaku is currently on loan at Everton and has once again impressed away from Stamford Bridge, just as he did at West Brom last season, scoring 13 Premier League goals in 28 appearances for the Goodison Park outfit. The Belgian is four goals away from matching his record at the Hawthorns, 17 goals, during a season-long loan spell last campaign and Everton’s hopes of retaining Lukaku, who is contracted at Stamford Bridge until 2016, have been given a boost with the news that Chelsea may hold on to Ba after all. As well as Everton, Tottenham have also been linked with an interest in landing Lukaku should Chelsea be willing to sell in the summer.