Portsmouth have signed West Ham's Paul McCallum on loan for the rest of the season with fellow striker David Connolly leaving by mutual consent.
McCallum, 21, has had several previous loan spells in League Two with AFC Wimbledon, Aldershot and Torquay.
The 37-year-old Connolly made 38 appearances for the club after signing on a free transfer from Southampton in January 2013, scoring 12 goals.
The former Republic of Ireland striker has not played for Pompey this season.
Connolly spent the second half of last season on loan at Oxford United.
Pompey boss Andy Awford said the willingness of McCallum, who is yet to appear in the West Ham first team, to make a series of loan moves was a positive sign.
"He's prepared to go out and play football," Awford told BBC Radio Solent.
"A lot of young lads are happy to sit around in a Premier League reserve side, talk to their agents and wait for a big move which very rarely happens.
"He's gone out and played football and he's scored goals wherever he's played and I'm looking forward to working with him."
McCallum has also played in the Scottish Premier League, in a loan spell with Hearts.