Scoring goals has not been a problem for the Blues this season - only three teams have netted more than them. But having conceded 13 times in 11 games, it is no surprise to see rumours of signing a centre-back doing the rounds. The likes of Tosin Adarabioyo arrived to replace Thiago Silva in the summer but he has yet to provide any real competition to Levi Colwill and Wesley Fofana. Araujo's versatility and high ceiling would make him a shrewd signing if Chelsea are willing to pay Benfica's asking price.