She wore, she wore,
She wore a yellow ribbon,
She wore a yellow ribbon in the merry month of May.
And when I asked Oh why she wore her ribbon,
She said "It's for the The Arsenal we're going to Wembley!
Wembley! Wembley!
We're the famous Arsenal and we're going to Wembley!"

Team
Aubameyang - Lacazette - Pépé
Saka - Xhaka - Ceballos - AMN
Tierney - Luiz - Holding
Martinez
Tactics
Chelsea tend to be a high possession team, so I would use similar tactics to Pool / Chelsea. Absorb and break.
Two danger men are Giroud and Pulisic. Both played today. Giroud has about 9 goals in 11 starts, so would put Holding-Luiz to stop him in the air.
I would start AMN to counter Pulisic. Pulisic is incredible on the ball, fast and athletic. AMN will do better in dealing with his fast directions on the ball, and his cutting into the box off the ball better than Bellerin.
Prediction: 2-1 Arsenal AET.
Odds (Betfair)
Chelsea - 11/8 favorites
Arsenal - 12/5