West Ham midfielder Freddie Ljungberg says Arsenal are building a special young team.
Ljungberg, 30, faces his old Gunners pals for the first time tomorrow.
He said: "The team is playing with the same belief and confidence we had when I was there.
"There was a great spirit and huge respect for manager Arsene Wenger.
"It will feel strange playing against them but now I have a new challenge."