Rawson, who initially joined the Millers on a month-long loan, had his deal extended by a further six months in January, but he will return to the iPro Stadium following Darren Wassall's appointment as interim head coach.
The Nottingham-born 19-year-old started 16 times for Rotherham, scoring twice, but was left out of both of Neil Warnock's match-day squads since the Yorkshireman's arrival in place of Neil Redfearn.
It was claimed last week that a failure to integrate Derby's academy players was the reason behind Paul Clement's sacking earlier this month and Rawson's recall, along with that of striker Offrande Zanzale from Stevenage, certainly supports this and offers the pair hope of breaking into Wassall's promotion-chasing team.
And based on Rotherham fans' assessment on Twitter, Derby have themselves quite a player in 6ft 4 centre-back Rawson, who is yet to feature for the Rams' first-team in his two years as a professional.
.@Farrendrawson1 thanks for your efforts over the two seasons. Top player with a big future good luck with Derby!— Joe Piper (@piperjoee) February 22, 2016
@Farrendrawson1 good luck in the future, thanks for last season and half of this season. Future premiership star— Jordan (@Jordan_Rufc) February 22, 2016
@rothtisersport new manager at Derby and no big shock given that he played U21. Big loss for us though— Paul Turner (@PaulTurner47) February 22, 2016