The 26-year-old former Everton and Sunderland player was given 30 minutes in Tuesday night's 2-2 draw against Gillingham.
Oster will be hoping to impress new manager Colin Lee who replaced the sacked player-coach Steve Claridge this week.
The 26-year-old former Everton and Sunderland player was given 30 minutes in Tuesday night's 2-2 draw against Gillingham.
Oster will be hoping to impress new manager Colin Lee who replaced the sacked player-coach Steve Claridge this week.