MADRID, Aug 20 (Reuters) - Valencia have paid the buy-out clause to secure the services of Colombia striker Dorlan Pabon from Monterrey, though the Mexican club are disputing the details of the deal, the Spanish side said on Tuesday. The 25-year-old forward, who played part of last season on loan with La Liga side Real Betis, will come in to help fill the gap left by the sale of Roberto Soldado to Tottenham Hotspur. "Pabon will be a Valencia player as we have deposited his buy-out clause of $10 million," Valencia president Amadeo Salvo told a news conference. ... More...