According to the Daily Mail, Chelsea insiders believe Jackson is worth more than Ekitic and Sesco, and asking Newcastle for 80 million to price Jackson is reasonable.
Chelsea insists that Jackson's value should be higher than Ekitic and Sesco, but lower than Isaac. The data proves this: Jackson's 24 goals in 65 games in the past two seasons; in the weaker Bundesliga, Cesco has 27 goals in 64 games and Ekitic has 19 goals in 47 games; and Isaac has 44 goals in 64 games in Newcastle, which is reasonable to have nearly twice the value.
Whether Chelsea is willing to negotiate concessions with Newcastle or lower the asking price when foreign clubs such as Milan and Juventus are quoted remains to be seen. As a source revealed to the Daily Mail: "It is indeed not worth 80 million pounds when viewed with the naked eye. But the market value, data analysis and environmental factors make this price true."