Georginio Wijnaldum expects Premier League title hopefuls Liverpool to have a difficult game against Manchester United as Ole Gunnar Solskjaer's side are enjoying "a new flow".
United are unbeaten in the Premier League since Solskjaer took temporary charge as the replacement for Jose Mourinho in December, winning eight games and drawing the other.
That run has seen United climb into the top four as they seek Champions League qualification, while victory at Old Trafford on Sunday could also help them derail Liverpool's title bid.
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Liverpool, meanwhile, are enduring a stickier spell, having won only three of their past eight games in all competitions amid a defensive injury crisis.