"Paul has a lot of quality and has had the luck to arrive at Juventus at the right moment," Sacchi told Tuttosport.
"Juventus are the example of a team that multiplies the quality of the individual.
"When you are feeling well at a club, you should not leave. One million more or less doesn't make someone richer or poorer. A player should primarily think about their career.
"There are plenty of examples of big players who switched clubs for higher wages and then flopped at their new team."
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