West Brom defender Jara stayed in touch with Chilean miners
West Bromwich Albion defender Gonzalo Jara maintained contact with Chile's miners while they were trapped.
Many of those rescued this week are fans of Jara's former club Colo-Colo.
Di Matteo said: "Gonzalo donated a shirt and sent a message to the miners because there was an ex-player trapped down there too."
Chile international Jara is set to line up against Manchester United at Old Trafford tomorrow.