Led by Ben Arfa, the Ligue 1 side ran out 3-1 winners in their Europa League last-16 first leg on Thursday, with Ismaila Sarr's late third goal putting Rennes in control of the tie heading into the return match.
First came a 2-1 loss to Burnley, their 2-0 loss against Chelsea was followed by a 1-1 draw in the north London derby and then came Saturday's loss, from 1-0 up, against Southampton.
Speaking as quoted by ITV, Emery said: "They are in a very good moment but we are together in the table". 'We've got Arsenal, a fantastic game to get yourself ready again.' 'It might be different kind of systems or is it a counter-attacking game you want - it's all sorts.
Manchester United players were clearly in a good mood ahead of their clash with Arsenal following their recent historic win over PSG. So for me, [Erik] ten Hag from Ajax and Solskjaer from Manchester United.
"I'm very, very happy".
"It was one of the hardest nights we've had physically - probably this one (PSG) and the Arsenal cup game are the two hardest games we've had".
"The result is for the first match and for the first 90 minutes".
"That's the pragmatic way of looking at football". But in addition to providing an opportunity to enjoy high caliber play, tradition has become a positive experience that brings the team together to watch the sport we enjoy and to bond as a brotherhood.
Now there is no option for the Manchester United board but to hand the Norwegian the permanent job at Old Trafford. Although these stats do bode well for Unai Emery's men, they are by no means the favourites, but neither are Manchester United. "This time maybe though they are going to do the same - and they didn't".
Arsenal can also take inspiration from Ajax and Manchester United, who produced stunning comebacks to reach the Champions League quarter-finals this week by knocking out holders Real Madrid and big-spending Paris St Germain respectively.
"He's a young guy, but he's a young guy already with huge experience", Mourinho said.
"I don't think it is definitive, but we need to show and push on Sunday to take more possibility to finish in the top four".