Pato has been linked to numerous clubs, but Chelsea have reportedly been on the lookout for a striker.
Pato has been linked with numerous English clubs, including Liverpool and West Ham United but it appears the Brazilian is on his way to Stamford Bridge, with the Premier League champions said to be in advanced talks with his agent, and the player could sign a contract worth £1.77 million per year - thought the length of the contract is not specified.
Earlier on in the month, as reported by the Guardian, interim manager Guus Hiddink suggested that the Blues are short of firepower, and although he is only with the club until the end of the season, he may be forced into the market as Chelsea look to revive their Premier League fortunes and end the season with some silverware.
Diego Costa has show signs of the form that helped him finish as the club's top scorer last season - hitting the 20-goal mark in the process - but has had his fair share of injury problems.
Loic Remy has been mostly cover for Costa but hasn't been able to get a decent run of games together in the side, and has also suffered from injury problems, and the gamble on Radamel Falcao has not reaped the rewards the club will have hoped for given the Colombian has spent most of his time on the sidelines - and contributed just the one goal for the club.
Some will question whether Pato is the calibre of striker that Chelsea need. He certainly showed flashes of his talent in Milan and has done enough to be capped by his country on 27 occasions but Corinthians doesn't seem to have worked out for him.
He has been on loan at Sao Paulo while the report says that Pato has also turned down a lucrative move to the Chinese league.
It could be another gamble for Chelsea but this is a big opportunity for Pato to prove himself and show that he can be a top forward in a good side.
His career so far has seen him score 107 goals in 278 games, and he has average a ratio of around a goal every three games for pretty much every side he has played for. Chelsea will want that to come down to around one in two.