Defender Hendry signed a four-and-a-half-year deal from Dundee on transfer-deadline day with goalkeeper Bain arriving on loan from the Dens Park club until the end of the season.
Craig Gordon (knee), Leigh Griffiths (calf), Marvin Compper (calf strain), Jonny Hayes (broken leg), Tom Rogic, Anthony Ralston (both knee), Stuart Armstrong (hernia operation) and Patrick Roberts (hamstring) remain out.
Provisional squad: De Vries, Lustig, Tierney, Hendry, Gamboa, Simunovic, Boyata, Ntcham, Brown, Bitton, McGregor, Musonda, Forrest, Sinclair, Dembele, Ajer, Edouard, Johnston, Kouassi, Miller, Bain.
Uwe Rosler was sacked by Fleetwood following a 3-0 reverse at Doncaster which condemned Town to a seventh straight defeat in all competitions.
Cambridge interim head coach Joe Dunne was pleased with how his side adapted to beat Grimsby 3-1.
Southend manager Chris Powell led the applause for Jason Demetriou after the right-back scored twice in the 3-1 win against Portsmouth at Roots Hall.
Morecambe boss Jim Bentley was the happier manager after Gregg Wylde's 90th-minute strike earned his side a point in their 1-1 draw with Forest Green.
Manager Gareth Ainsworth described Wycombe's 2-0 win at Cheltenham as a thoroughly professional performance.
Skipper Richard Wood scored the winner just before half time as in-form Rotherham pulled off a 1-0 victory at League One leaders Shrewsbury.