England U21 ‘keeper Bettinelli has been linked with a move to Chelsea, while teenage starlet Roberts is reportedly being monitored by a number of top sides including Manchester City and Arsenal.
But Symons said: “We can keep them, for sure, and that’s what we plan on doing. They’ve developed at this football club and they’ll continue to develop here. It’s a good place for young players to be.
“We want to keep hold of all our best young players, we want them to have a bright future with Fulham.”
Symons also confirmed captain Scott Parker will be staying at Craven Cottage.
“Scotty has another year on his contract so he’ll be here,” he added. “He’s been one of our better performers over the course of the season. He’s a very good player, a talismanic type of player who has a lot to offer.”