Both players arrived in the final days of the summer market.
Hayles told the Fulham Chronicle: "Both Scott Parker and Darren Bent will be top players for Fulham football club. They have been two of the most consistent performers in the Premier League over the past four or five years.
"With the World Cup set to take place next year in Brazil. Scott and Darren can achieve their England ambitions at Fulham. Craven Cottage is the place for them to do that."
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