League Two Leyton Orient have signed Mansfield Town striker Ollie Palmer on a two-year deal for an undisclosed fee.
The 23-year-old, who spent the second half of last season on loan at non-league Grimsby, has scored 15 goals in 80 appearances so far in his career.
"There was interest from other Football League clubs," head coach Ian Hendon told the club website. "Ollie has good feet and is a good finisher as well."
Meanwhile, forward Darius Henderson, 33, has left Orient after one season.
The former Watford and Millwall man scored eight goals in 25 appearances last season.
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