Still only 20, he suffered from a series of injuries after the Under-20 South American tournament in January and managed a total 17 Serie A appearances for Pescara.
Unable to help the Delfini escape relegation, he does appear ready to aid their financial situation with a big money sale.
Pescara signed him from Atletico Nacional in July 2012 on loan with an option to buy for €3.5m (£3m), which they have activated.
Now strong reports from Portugal and Italy suggest Porto have agreed to snap up Quintero for (£8.5m) plus a further €3m (£2.56m) in performance-related bonuses.
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