Rotherham have signed Brentford striker Lewis Grabban on a free transfer, their seventh signing of the close season.
The 23-year-old, who has signed a two-year deal, played under current Millers' boss Andy Scott at Brentford.
"I know him very well, I know what he is about and I know what he will try to do for next season so it was an easy decision for me," said Grabban.
Grabban started at Crystal Palace and had loans at Oldham and Motherwell before joining Millwall in 2008.
He moved to Brentford on a short-term deal in January this year, after an extended loan at the club.