Cole has not played for Chelsea since starting against Stoke in the FA Cup on January 26, but there was no sign of a lack of sharpness as he impressed in the first 45 minutes of England's 1-0 victory against Denmark at Wembley.
Cahill told the London Evening Standard: "You never would have known that Ashley has not played for so long. I asked him how he felt afterwards and he told me he was feeling great and how much he loved being out on the pitch again.
"Normally when you have been out for a few games you can come back a bit rusty but he didn't show any sign of that at all. He looked really sharp and it was good to see him back out there.
"Ashley has shown he is one of the best left-backs in the country for 107 caps now and is still a quality footballer. He dropped straight back in as if he'd never been away and it was pleasing to see for us players and I am sure for the manager as well.
"He is not the kind of player to cause any trouble if he's not playing and he's been very professional at Chelsea. He's been getting his head down and working hard. That's the way he is."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball