Sunderland look set to head into their Championship opener with their squad well intact. Sunderland were expected to lose some of their prized assets this summer and have already received offers for the likes of Pierre Ekwah and Trai Hume. However, they have managed to tie down both Dan Ballard and Chris Rigg to new contracts and have so far kept hold of Jack Clarke. The Black Cats look set to take their strongest team to Cardiff City, but that doesn’t mean they couldn’t part ways with those on the fringes. The likes of Elliot Embleton and Jay Matete have been linked with a loan exit, but it i…