Sammon can boost goal threat
Just a week after Alex Revell joined Cardiff City, the 28-year-old Republic of Ireland international has come in to help replenish the forward line.
Sammon made his name in Scotland with Kilmarnock before moving Wigan when they were in the Premier League. Derby paid £1.2 million for him in 2012 and he made 44 league appearances for them, scoring ten goals, before moving to Portman Road in August, where he's netted once in 20 matches.
Steve Evans said: "Conor is a full international, a big striker who gives everything for the cause and I believe we can get him scoring goals."
A decision is expected imminently on whether young defender Reece James can extend his stay from Manchester United. However Scott Wootton looks to have played his last game for the Millers as Massimo Cellino, owner of his parent club, fellow Championship strugglers Leeds United, does not want him to joining a team so close in the league table.
Goalkeeper Scott Loach has joined Peterborough on a month's loan but Ben Pringle remains a Rotherham player.
The club accepted a bid from Millwall last week but the midfield man, who has been out of favour lately, felt the move wasn't right.