Vyner joins Dons on loan

The 22-year-old has had previous spells on loan from Ashton Gate with Accrington Stanley, Plymouth Argyle and Rotherham United.

Dons boss Derek McInnes has already brought in Ryan Hedges (Barnsley), Ash Taylor (Northampton Town), Curtis Main (Motherwell), Craig Bryson (Derby County), Jon Gallagher (Atlanta United, loan), Greg Leigh (NAC Breda, loan), James Wilson (Manchester United) and Funso Ojo (Scunthorpe United).