The Spanish giants have already communicated their interest clearly to Bastoni's camp, according to reports, and they have outlined the structure of a possible five-year agreement.
Bastoni is willing to complete a move to Catalonia after spending the last seven seasons at Inter. However, Fabrizio Romano reports that there is a "substantial gap in valuation" between the two clubs.
Barca's financial troubles are well-documented, and that isn't the only variable potentially scuppering a move. While sporting director Deco has been "paving the way for months" to get a deal over the line, Hansi Flick's stance is the opposite.
Matteo Moretto believes that Flick has "expressed growing doubts" over some of the Italian's technical attributes in relation to the team's current and future playing style.
The German presents another obstacle preventing Barcelona from landing the 27-year-old this summer, and he's already asked Deco to explore other options.