Kris Commons suggests Celtic need to bring in even more players this summer.
The Scottish champions have already signed Virgil van Dijk, Amido Balde and Steven Mouyokolo this off-season but midfielder Commons says there should be more additions made as they prepare for a busy campaign of league, cups and European competition.
"We will pick up injuries throughout the season so it is important that people that are pushing us all the way are more than capable of playing at that sort of level," he said.
"So it would be ideal if we could get two or three good additions to maintain that level.
"We are always trying to improve, we want to make the group stages of the Champions League and obviously we have three (domestic) trophies to win this season."
