Jagielka admits Everton must buy this week
Jagielka hopes manager David Moyes can land his transfer targets before Thursday's deadline.
He admitted: "We could do with at least one new face this week. But obviously, it's out of our hands.
"It's the manager's job to make sure he can manage us not just physically but mentally in both competitions.
"If you do go far in the Cup, the fans get excited and you get excited."