Dan has already made three appearances as a replacement.
Andy Henderson is at centre while Gordon Bulloch remains at hooker.
Cammy Mather has been pencilled in for Saturday's match should he recover injury.
Cammy retired injured at half-time after suffering soft tissue damage to his chest and shoulder during Sunday's defeat by France.
If Cammy fails to recover Jon Petrie will provide backrow cover among the replacements.
Scotland
15 Chris Paterson (Edinburgh Rugby) CAPTAIN
14 Simon Danielli (Bath Rugby)
13 Tom Philip (Edinburgh Rugby)*
12 Andrew Henderson (Glasgow Warriors)
11 Simon Webster (Edinburgh Rugby)
10 Dan Parks (Glasgow Warriors)
9 Chris Cusiter (The Borders)*
1 Allan Jacobsen (Edinburgh Rugby)
2 Gordon Bulloch (Glasgow Warriors) VICE-CAPTAIN
3 Bruce Douglas (The Borders)
4 Scott Murray (Edinburgh Rugby)
5 Stuart Grimes (Newcastle Falcons)
6 Jason White (Sale Sharks)
8 Simon Taylor (Edinburgh Rugby)
7 Cameron Mather (Glasgow Warriors) or Allister Hogg (Edinburgh Rugby)*
Substitutes
16 Rob Russell (Saracens)
17 Gavin Kerr (Leeds Tykes)
18 Nathan Hines (Edinburgh Rugby)
19 Allister Hogg (Edinburgh Rugby)* or Jon Petrie (Glasgow Warriors)
20 Mike Blair (Edinburgh Rugby)*
21 Brendan Laney (Edinburgh Rugby)
22 Derrick Lee (Edinburgh Rugby)
Travelling with the party - Ben Hinshelwood (Worcester) and Simon Cross
(Edinburgh Rugby)
* = Member of the Scottish Institute of sport