Celtic transfer latest: Player set for shock exit | Portsmouth eye defender | Russians eye key man

Portsmouth are reportedly keen on Celtic defender Calvin Miller, while fellow full-back Anthony Ralston could also depart before the transfer window closes.

A general view of Celtic Park

Pompey eye Miller

Pompey are believed to be monitoring the left-back, who has struggled for game time despite making his debut in December 2016.

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Miller – who has one cap for Scotland Under-21s – spent the first half of last season on loan at Dundee before joining Ayr United in the Championship in January for the remainder of the campaign.

A general view of Celtic Park

The 21-year-old is under contract at Celtic until next summer. Portsmouth have also taken former Millwall left-back James Meredith on trial as they seek reinforcements in defence.

Hayes set for exit?

Meanwhile, versatile winger Jonny Hayes, who can also operate at left-back, is another player who could leave.

The Irishman has played just 63 minutes across two games so far this season - the 3-1 win over Sarajevo in Bosnia, and the Betfred Cup tie with Dunfermline. He hasn't been involved in any league matches.

Zenit keen on Ajer

Zenit St Petersburg approached Celtic with a view to holding talks with defender Kristoffer Ajer, but were put off by the club's valuation of the 21-year-old, according to reports.

The Russian giants, who were linked with a £12 million move for James Forrest earlier this summer, were said to be keen on the Norwegian international but felt the Hoops' asking price was too high, according to Championat.