The 19-year-old Irish centre-back made his first Premier League start in Saturday's 3-2 loss at Watford.
The 33-year-old has netted 14 Premier League goals for the Black Cats this season.
Wolverhampton Wanderers played out a 1-1 draw with Nottingham Forest in the Championship on Saturday.
Rangers are nearing a number of new signings, according to Mark Warburton.
The World Cup winner was linked with taking over at the Championship club.
Two former Tottenham Hotspur midfielders have waded into the debate over the Arsene Wenger protest by Arsenal fans at the weekend.
Karren Brady shares her admiration of Leicester City.
The Premier League title race could be over before Monday's game at Stamford Bridge.
The midfielder looks set to be a target for other parties once again this summer.
Everton won against Bournemouth in the Premier League on Saturday.