Jagielka has hailed teammate Leighton Baines as the in-form player in the Barclays Premier League this season and he again impressed during Friday's 5-0 win over minnows San Marino at Wembley.
Jagielka said: "It is going to be a really tough decision for the manager. Getting to watch Bainesy from a closer view than most, he has had a fantastic start to the season at club level and international level.
"It is not a bad headache for the manager to have. You've got Cole on 98 caps, a fantastic left-back, and then you've got the in-form player in the Premier League in Leighton Baines.
"As far as the manager goes he is going to have a bit of a headache but it will be a nice headache.
"I'm just glad I don't have to make that decision. I think I'd be tossing a coin, heads or tails. But I'm sure the manager will make the right decision."