Chalobah is currently on loan to Huddersfield.
He was full of praise for his teammates' progression, telling the club's official website: ''I've been really happy for them.
''I keep in contact with almost every day as well- Reece, Mason, Fikayo, Tammy, all of them.
''I'm just happy for them because it shows the hard work they've put in and going out on loan for a few years has paid off.
''They've done so well and it just shows that it doesn't matter about your age because if you're good enough, then you're old enough.
''That's what Frank has brought, giving the young players confidence for them to go out there and show people that they are capable of doing what they can do now, and you can see that in their performances.''
Chalobah added: ''Of course, I'm still learning as well and I still need to develop more and get better. I've been playing in the number eight role as well as the number six so it's been good to learn both positions.''