Celtic chief executive Peter Lawwell insists this is not a make or break season for Neil Lennon.
The manager has suggested that he will have to win the Scottish Premier League to keep himself in a job after a run of three consecutive titles for Rangers.
However, Lawwell told BBC Scotland: "No one ever said that this is a must-win season for Neil Lennon.
"But winning the league is our main objective every season and this one is no different."
Lennon has added Kelvin Wilson, Adam Matthews and Victor Wanyama to his squad over the summer but remains on the look out for new faces.
Goalkeeper Stipe Pletikosa and striker Katlego Mphela played as trialists in a 2-0 friendly defeat to Wolves on Wednesday.
Celtic finished just one point behind Rangers in the championship race last term and Lawwell thinks the outcome of the league may depend on the business done in this transfer window.
The chief executive said there was no sign of any imminent new arrivals and added that Celtic had not approached Dundee United about in-demand striker David Goodwillie.
"I think Neil is pretty satisfied with what he's got, he'll maybe do a bit of tinkering," said Lawwell.
"A lot of work was done last year and we have a good foundation, a good base.
"We're starting off from a more stable position this season and I think we are in better shape than we were this time last year."
Beram Kayal and Emilio Izaguirre caught the eye for Celtic during the last campaign and Celtic may have to fend off interest from England's wealthy clubs.
"We don't want to lose them," explained Lawwell. "Both of those players signed four-year deals last year.
"We wouldn't be actively trying to sell them but who knows? If the right number comes in, there might be a circumstance when we might have to look at it - if it suits the player, if it suits the club.
"At the moment, there is no prospect of that."