Chris Sutton thinks Celtic have to get more transfer business done this summer ahead of their crucial Champions League play-off.
Brendan Rodgers' men will contest a two-legged tie to determine whether they will make it into the league phase of European football's premier club competition at the end of August.
And Sutton believes that his old team shouldn't be negotiating said showdown without a 'full deck of cards'.
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"I’m not daft," he said [RecordSport]. "I understand how the market works.
"I’m fully aware that Celtic will have targets who, at this stage, might not be unavailable due to their own clubs not having made up their mind, or that agents are playing a waiting game and trying to smoke out the best deals, waiting to see if they can generate as much interest as possible for their client.
"Unless Celtic are going to start paying silly money, I’d imagine they may have to wait, perhaps even until the end of the window, for some of the key targets.
"But it still feels a little lacking to me at this precise point of proceedings and, at the very least, Rodgers will surely want the majority in his squad for the start of the domestic season.
"Rodgers doesn’t need me to tell him what it’s like to have to deal with these qualifiers without a full deck of cards. He’s been there.
"Now returned, he’s back in that pressure pot and, at this stage, there looks like there’s plenty to be done. Kieran Tierney has signed, but who is the back up with Greg Taylor leaving? Nygren now in with Ross Doohan, yet the new striker that was wanted in January when Kyogo left will still be wanted. Other areas of the side to be addressed.
"It seems there is much to do and there’s too much going on the line for Celtic not to try and get as much of it done as soon as possible."