http://www.chelseafc.com/news/latest-news/2014/Oct%2014/courtois-update.html
Courtois update
Mon, 6 Oct 2014
Chelsea Football Club can confirm Thibaut Courtois went to hospital during
our Premier League game against Arsenal yesterday [Sunday] for
precautionary tests on a head injury. Those tests came back all clear.
Thibaut was treated for a minor cut to his ear and was released from
hospital last night. He is expected to report for international duty later
this week.