Braga have handed Lucas Piazon a four-and-a-half-year contract to end his time at Chelsea, where he made just three appearances.
Ovie Ejaria has joined Reading from Liverpool in a reported £3million deal.
Blackburn Rovers provide the first test of the Championship season for relegated Bournemouth on September 12.
West Brom will play in the Premier League next season, where they could yet be joined by Swansea City, but Wigan Athletic are in League One.
With Brentford having faltered earlier, Fulham beat Sheffield Wednesday to keep their top-two hopes alive.
Hull City shipped eight goals to Wigan Athletic, whose survival hopes look increasingly positive at a time of worrying upheaval at the club.
Ethan Pinnock's 85th-minute header secured Brentford a sixth successive league win, closing the gap on the top two in the table.
In a big day at both ends of the Championship table, Leeds United tightened their grip on top spot and Stoke City climbed clear of danger.
West Brom dominated against Birmingham but could not score, while Louie Sibley and Rhian Brewster produced heroics for Derby and Swansea.
Charlie Adam remains in awe of Luis Suarez, who put past indiscretions behind him to forge a devastating partnership with Lionel Messi.