This seems to be the new Celtic FC 13/14 Home football shirt made by Nike.
This is a leaked picture but does appear genuine and to demonstrate Nike's latest attempt to be creative with the standard Hoops. On this occasion they have reverted to the traditional seven, with each individual green Hoop also formed from seven thinner versions.
After the current season's thinner nine Hoops, this design, should it prove to be the official and final version, may disappoint some fans hoping for a return to something more traditional and in keeping with Celtic's recent history - others may welcome another modern spin on a classic.
The current sponsorship deal with Tennent's Breweries expires at the end of the season so the sponsor is subject to change.