Alex McLeish has warned Celtic that Ange Postecoglou may find it “difficult” to make an impact before the season kicks off.

The former Scotland boss, speaking exclusively to Football Insider, admitted the 55-year-old could struggle to implement his plans before the Champions League qualifiers next month.

As reported by Sky Sports on Tuesday (8th June), Celtic are hoping to have Postecoglou in place for 5th July.

Football Insider revealed last week (3rd June) the Hoops had agreed a compensation deal with the manager’s current club Yokohama F. Marinos.

Celtic are said to want Postecoglou in for their training camp in Wales in July.

The Bhoys kick off their season with a Champions League qualifier the week commencing 19th July.

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McLeish admitted the prospective new boss would want more time to get his ideas across to his new squad.

McLeish told Football Insider’s Russell Edge: “It’s difficult the less time you have. There’s no doubt about that.

“You’d like to get your feet under the table and be looking at some (players).

“I’m sure he can look at videos easy enough of the players that were there last season and see what he’s going to try and do.

“But coming in late makes it a wee bit more difficult.”

The draw for the Champions League second qualifying round will take place on June 16th.

The Hoops could face Rapid Vienna, Galatasaray or FC Midtjylland.

In other news, Danny Mills claims Celtic have stolen a march on Premier League clubs in hunt to sign 24-year-old.