Charlie Mulgrew believes Celtic's new players will now know about Parkhead standards after the furore which followed the 1-0 home defeat by Hamilton on Sunday.
After Accies' first competitive win at Celtic Park in 76 years, which kept the champions in sixth place in the Premiership with 10 points dropped so far this season, Hoops' skipper Scott Brown accused some of his team-mates of "hiding".
Manager Ronny Deila again came in for criticism from increasingly disgruntled fans, many of whom are still unconvinced about the Norwegian and some of his signings with Aleksandar Tonev, Mubarak Wakaso, Stefan Scepovic and Jo Inge Berget, in particular, under scrutiny, the latter two not leaving the bench against the Lanarkshire side.
Mulgrew missed the Hamilton game with a knee injury which also kept him out of the Scotland squad for the European Championship qualifying double-header against Georgia and Poland - he is also suspended for the first game at Ibrox on Saturday - but he will be fit for the visit to Ross County following the international break.
Speaking at his club's Lennoxtown training complex, he was asked if the new players were aware of how high expectations were at Parkhead.
"If they didn't before they must (know) now," said the 28-year-old. There is pressure on us now to start winning games.
"There is (pressure) every game but especially after a defeat you need to come back out fighting. It wasn't good enough all round (against Hamilton). We all know that.
"We all have to do better as a group. I don't think confidence is an issue, I think that is fine."