The Qatari owner of Paris Saint-Germain (PSG) agreed a deal Monday to take a minority stake in Portuguese club Braga. Qatar Sports Investments said an agreement to buy almost 22 percent of shares in the 101-year-old club was declared to Portuguese financial authorities, and the deal should be completed within months. QSI is buying into Champions League potential with Braga, which is a Europa League regular having reached the final in 2011 and played in the group stage in seven of the past eight seasons. The club is in third place in the Portuguese league – behind traditional powers Benfica and…