Celtic have reportedly increased their efforts to try to sign Aberdeen winger Jonny Hayes.
Since the end of the season, the Scottish Premiership champions have been linked with a move for the Republic of Ireland international, who netted nine times in 33 league appearances.
However, they have faced competition from the likes of Cardiff City and Birmingham City, who have both identified Hayes as a top transfer target ahead of the next campaign.
According to The Express, Celtic have lodged an offer of £1.3m, with Ryan Christie also being included on a season-long loan deal.
Christie scored six goals in 13 outings for the Dons during the second half of the campaign, with five of his strikes coming during the closing weeks.
It has been suggested that a transfer could be completed within the next two days.
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