West Brom defender Jara signs for Forest
Reyes has joined Nottingham Forest on a one-year contract.
Forest boss Billy Davies told the club's website: "I am very pleased Gonzalo has agreed to join us for next season.
"He made a terrific impact while on loan with us and it was hugely disappointing to lose him to injury at such a crucial stage.
"He gives us real strength in depth and brings with him an abundance of experience from the top level of the game."