How will Coutinho help Barcelona to buy Verratti?

A transfer target of Barcelona can help the Catalans to purchase Marco Verratti from Paris Saint-Germain.
As it is known, the midfielder of the Parisians is the most desired player at the Stadium Camp Nou in view of the problems of the Blaugranas in the middle of the field during the past season.
The former French champion is adamant that it will not release the Italian to go. In recent days, however, the situation is about to change dramatically.
The reason is the star of Liverpool, Philippe Coutinho, who came in sight of the French club. The Brazilian has been long associated with Barcelona, but now the efforts of the Catalans are entirely aimed at Verratti.
Liverpool has told Paris Saint-Germain that it will sell Coutinho at an offer of 100 million euros. The amount does not seem to be a big problem for the French club from record of football forecast given that they will receive almost the same money and with a possible transfer of Verratti to Barcelona.