For a couple of seasons now, William's name has been strongly linked to a Barcelona that has always shown an interest in the Brazilian.
However, his arrival at Camp Nou has never materialised and the player continues to play for Chelsea year after year, although that could change this summer.
According to 'Mundo Deportivo', the interest in Willian persists, as he is a versatile footballer who could fit into different positions in Barcelona's attack and prove for an appropriate reinforcement.
The Brazilian is well developed as a winger and even as a midfielder, which would offer the team multiple possibilities.
In addition, William ends this season's contract so the 31-year-old could land be an economically-sound option.