New signings Lamine Kone and Wahbi Khazri have been backed to come back from the break EVEN better.
Sunderland boss Sam Allardyce has warned the club's Premier League rivals that the new signings will benefit the most from the warm-weather training camp in Dubai.
"All of them have been pretty tired to say the least when they’ve come off the pitch since they started," Allardyce told the Echo.
"Getting to grips with that has been extremely good.
"They've all contributed well.
"The more and more used to that they get, then hopefully they’ll produce better performances."
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Meanwhile, Sunderland's Under-21 match against Liverpool has been brought forward and will now be played this Sunday, February 21, at Chester FC's Lookers Vauxhall Stadium.
The game, originally scheduled for the following day, will kick off at noon.
Andy Welsh's side, who sit just two points behind tabletoppers Manchester United, will be looking for back to back wins after Mikael Mandron's double guided the young Black Cats to a 3-2 win over Middlesbrough on Monday night.
Meanwhile for Michael Beale's Liverpool side, they will be looking to bounce back from a 3-0 home defeat against Manchester City.
They have had a tough season so far in Division One of the Under-21 Premier League, winning just four of their 14 matches.
Welsh's men will look to keep the pressure on United at the top of the table, with the pair beginning to distance themselves away from third placed Everton; the gap now nine points between them and Sunderland with seven games to go.