"You don't know what will happen because we have still got 10 days to go, and maybe we are one or two players short," Jol said.
"But if it stays like it is now I think we can be quite happy because if you would have told me three or four weeks ago that Darren Bent would be on board, as well as Scott Parker and also Adel Taarabt, who played for me at Spurs and was a £15m player (at QPR) probably 18 months ago, I wouldn't believe you, so I am a happy man."
Jol thinks Parker will turn out to be an excellent signing for the club.
"Scott is the perfect player for most of the managers in the Premier League," Jol added. "He is English, is a leader, can play on the ball, can play off the ball, and he makes interceptions, so I think it is fantastic to have him on board."