Balshaw, a 2012 tournament winner, is starring in his 14th season of European action with 30 tries from his 77 appearances and come the first weekend of April he could be doing his best to knock the 2006 champions out of the tournament and help Biarritz Olympique take a giant step towards a successful defence of the title they won last May.
Gloucester made it six from six in Pool 1 with their 36-16 win over Mont de Marsan and Davies is relishing welcoming Biarritz - and Balshaw - to Kingsholm.
"The fact we've got a home quarter-final is huge for us and we look forward to welcoming one of the big powerhouses of Europe," said Davies.
"We have to be reasonably pleased to have made the knock-out stages of a competition in our first season together - but that's only the first part of the job.
"It's very important that as a group we get experience of what play-off and knock-out matches are like.
"From that we'll grow and become better, and more experienced in that environment, but our accuracy has got to improve if we want to win that quarter-final."
If Gloucester can end Biarritz and Balshaw's hopes of a successful title defence then they would face another European champion club in either London Wasps or Leinster.