Wellington Silva enjoyed his training spell with Arsenal.
Wellington, 17, has revealed Gunners boss Arsene Wenger has already assured him about his long-term future and will regard him as part of his first team squad when he returns to Arsenal in January.
Rio-born Wellington, who has already been called up to train with the full Brazil squad, said: "The experience in London was perfect. I can now dream of playing in the Premier League and I don't think it will be hard for me to adapt.
"Mr Wenger has spoken with me and has helped me with my work and training. I am really looking forward to this challenge. It's a great opportunity for me in my career."
