Crystal Palace will hold a minute's silence ahead of their Championship fixture with Blackpool in honour of murdered couple Barry and Elizabeth Dighton. 
The pair were season ticket holders in the Upper Holmesdale and the club have decided to honour them with the mark of respect before the kick-off.
Palace had young striker Moses substituted towards the end of Tuesday night's goalless draw with Sheffield Wednesday after sustaining an ankle knock.
Defender McCarthy played despite a virus and boss Neil Warnock expects him to get worse before he gets better which could rule him out.
Fellow centre-half Davis was sidelined by the same virus in midweek but he could have recovered in time for Saturday and will be in line for his second Palace debut if McCarthy misses out.
Strikers Freddie Sears (ankle) and Stern John (elbow) are still out, although both should be close to returning after the international break.
Blackpool boss Ian Holloway will again be without a number of players when his side travel to face Crystal Palace at Selhurst Park on Saturday but is likely to be unchanged after the mid-week defeat at Ashton Gate.