Jose Mourinho is well aware that Brazilian players can help give his side an edge.
They were an important part of his success with Porto.
He will also know that Brazilians - and South Americans in general - have yet to make the impact in the Premiership that they have made in every other major European league.
Following these guidelines, his interest in Dede of Borussia Dortmund is entirely understandable.
The 27-year-old would give him some attacking flair at left back, something that his Chelsea side badly missed in the Champions League semi-final defeat to Liverpool.
Dede offers the pace and explosion to reach the bye-line, close dribbling skills plus the left-footed skills to supply good, quick service into the box.
And after six years in Germany, he is thoroughly adapted to European football, and unlikely to experience the problems of homesickness that often afflict Brazilians when they first move abroad.
Indeed, Dede has been away for so long that he has practically been forgotten at home.
He came through the ranks with Atletico Mineiro from his home town of Belo Horizonte, and was only 21 when he made the move to Dortmund in 1999.
He has one international cap - a few minutes as a substitute in a friendly away to Hungary last April. It came in strange circumstances.
Tired of being overlooked at home, Dede had been approached by Qatar with a view to taking out citizenship and representing the Middle Eastern country.
With Brazil still searching for a reserve for Roberto Carlos, it seemed that coach Carlos Alberto Parreira called up Dede both to have a close look at him, and to make sure that he could not be claimed by anyone else.
He has not been included in the squad since.
A move to Chelsea would raise his profile in Brazil, boost his international hopes and take him from mid-table obscurity straight into the Champions League.
But his lack of international caps could count against him.
It is not clear how he would qualify for a work permit to enter fortress England.