Charlton striker Ajose and Nottingham Forest midfielder Grant have agreed loan deals until the end of the season, with their possible participation subject to receiving Football Association clearance.
Defender Matt Preston is suspended, but Neal Bishop is back from a one-match ban.
Goalkeeper Bobby Olejnik (knee) is out for the season, while Alex MacDonald and David Mirfin (both knee) are still out.
Defender Joe McNerney completes a three-match ban for Crawley.
McNerney was shown a straight red card in the New Year's Day win over Colchester and missed the win over Cheltenham and defeat to Stevenage.
Defender Lewis Young and midfielder Filipe Morais are pushing for starts.
Morais made his return from an eight-game absence following hand surgery and an Achilles problem as a substitute at Stevenage.
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Mansfield Town v Crawley Town
bet365 match odds: Mansfield 9/20, Draw 18/5, Crawley Town 7/1
Charlton striker Ajose and Nottingham Forest midfielder Grant have agreed loan deals until the end of the season, with their possible participation subject to receiving Football Association clearance.
Defender Matt Preston is suspended, but Neal Bishop is back from a one-match ban.
Goalkeeper Bobby Olejnik (knee) is out for the season, while Alex MacDonald and David Mirfin (both knee) are still out.
Defender Joe McNerney completes a three-match ban for Crawley.
McNerney was shown a straight red card in the New Year's Day win over Colchester and missed the win over Cheltenham and defeat to Stevenage.
Defender Lewis Young and midfielder Filipe Morais are pushing for starts.
Morais made his return from an eight-game absence following hand surgery and an Achilles problem as a substitute at Stevenage.
Head to Head Comparison
Mansfield Town - Last 5 Matches
Crawley Town - Last 5 Matches