Celtic are reportedly weighing up left-back reinforcements as they search for cover, and possibly competition, for Kieran Tierney, according to BBC News.
Manager Martin O'Neill is said to be considering Dundee United's Will Ferry, 25, as one option to strengthen his defensive options. Meanwhile, the Scottish champions are understood to be in talks with former Hearts defender James Penrice, now at AEK Athens, with the 27-year-old reportedly open to a return to Scottish football.
Neither move appears close to completion, with the report framing both as names under consideration rather than confirmed targets. Tierney remains Celtic's first-choice left-back, but O'Neill is clearly keen to add depth in that area given the demands of domestic and European football.
Whether Ferry or Penrice — or indeed both — emerge as genuine Celtic Park targets remains to be seen, but the links underline the Parkhead club's intent to bolster their squad options as they look to cover one of their key positions heading into the new campaign.