With the Scottish champions linked with a few new strikers, Commons has urged Neil Lennon and co. to add further reinforcements to the Celtic Park roster.
"We need to add more quality," said Commons. "If we pick up injuries in certain areas, we will be down to the bare bones. I know the manager and everyone behind the scenes are doing all they can.
"It would have been stupid not to take the money for Victor, and Gary wanted to play Premier League football. I'm hoping the money we have brought in means we can buy quality players who are going to make us better or, if not, get us up to the standard we were before we lost them.
"We do need to invest in good players. There is no point bringing guys to build the squad, we need to bring in the right ones. From a players' point of view, you want to see the club bring in people who are going to improve you straight away.
"The manager wants success and improvement every year. We want 90 points, we want the Treble, we want the Champions League. That's our aim."