Tudgay’s temporary spell with Championship rivals Barnsley ended on a low note as he suffered a broken collarbone against Blackburn last Saturday. The striker is expected to be out of action for six weeks.
Experienced midfielder Greening has also spent the past six weeks at Barnsley, clocking up six league appearances and scoring once.
But it was striker McGoldrick who enjoyed the most productive loan spell of the trio, scoring 16 goals from 22 appearances in four months with Coventry.
Meanwhile, David Morgan has completed his youth loan at Lincoln, for whom he made eight appearances in the Blue Square Premier Division.