Murray Davidson will get his knee scanned, as St Johnstone seek to establish how long the the influential midfielder will be out injured.
Tommy Wright has accumulated a long list of successful signings for St Johnstone – but current captain Joe Shaughnessy will be near the top of it.
Montrose were knocked off the top of the League Two table on goal difference by Peterhead 11 days ago.
St Johnstone’s Scottish Cup fourth round clash with Albion Rovers has been postponed for a second time.
Paul Paton’s last visit to Dens Park was one of the St Johnstone midfielder’s least enjoyable occasions as a professional footballer.