Alex McLeish believes that Neil Lennon will be reminding the new Celtic signings of his expectations after looking like “rabbits in the headlights” against Rangers.

The former Gers and Scotland manager, speaking exclusively to Football Insider assistant editor Russell Edge, has questioned whether the recent arrivals froze under the pressure of Saturday’s derby clash.

Lennon started three of his new signings at Parkhead as Vasilios Barkas, Shane Duffy and Diego Laxalt all made their Old Firm debuts, while Albian Ajeti and David Turnbull both came off the bench.

A brace from Connor Goldson handed the Gers bragging rights over their Glasgow rivals and cemented their place at the top of the Premiership table.

McLeish suggests that Lennon will have been less than impressed with what he saw from his recent additions and that the Hoops boss will be discussing what went wrong this week.

McLeish told Football Insider: “Some of the new signings looked a little bit like rabbits in the headlights. That’s something that Neil Lennon will be speaking to them and going over.

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“The analytical guys will be going over the performance levels and looking at what they could have done better. Did they freeze a little bit?

“They obviously didn’t trouble the Rangers defence as much as we thought when Celtic were A) eyeing up these players and B) when they finally signed them. The key test is out on that pitch.

“The guys that have come into the Celtic team, even though they haven’t played in front of a massive crowd, an influential crowd, at the weekend, they’ll still have been taken aback and reminded how important these Old Firm clashes are.

“I’m sure it would have been an eye-opener for the two, three guys who played and if they’re going to cement their name in Celtic colours then they know they need to play at a better level.”

In other Celtic news, Frank McAvennie has been left fuming over major player development.