It means : Bastos will join the Spurs soon.
(Michel Bastos is a brasilian soccer player who plays in the french city of Lyon. He's having back injury so he can't play right now).
Bientot is a french word and means soon
See you soon or shortly
I hope to see you soon.
Mon chez means my home (it should be - mon chez moi)
home for example chez moi - my house
"Chez vous" means "at your place".
ça va chez vous ? = how are you, you'all?
you're rude/impolite.
Goodbye sir, see you soon
If you are talking about the French phrase "a bientot", it means goodbye.
"et à bientôt" = "and see you soon"
Chez François means "At Francis' place"