According to The Sun, Rangers' bid to re-sign defender Danny Wilson could fail, with the deal now in real danger of collapsing.
Rangers appointed new manager Mark Warburton last week, and the new boss must now rebuild a squad which lost 11 out of contract players this summer.
The Sun believe that Wigan Athletic defender Rob Kiernan is on the verge of making a move to Ibrox, but the club have been dealt a blow in their pursuit of Danny Wilson.
Wilson, 23, captained Hearts to the Scottish Championship title this past season, but chose to leave the club this summer by invoking a release clause in his contract.
The centre back is now a free agent, and The Sun believe Wilson - who started his career at Ibrox before joining Liverpool in 2010 - has held talks over a return to Ibrox this week.
However, the report states that Rangers failed to reach an agreement with Wilson, and he could now return south of the border, as he has offers from English clubs; leaving Warburton to potentially look elsewhere for defensive reinforcements.
If the bid for Wilson does fail, Warburton will need to find another defender to partner Kiernan in the heart of defence - and he could return to former club Brentford to land one.
Reports from The Sun earlier this week suggested that Bees defender Alfie Mawson was a target for Warburton, given that the duo worked together at Griffin Park.
The 21-year-old centre back is out of contract this summer and could now become a starter at Rangers if Wilson doesn't sign this summer; and having impressed on loan at Wycombe last season, Mawson could be a bargain signing for Rangers.