Troubled Smith joins Raiders

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The Oakland Raiders have signed former San Francisco 49ers outside linebacker Aldon Smith to a one-year contract.

The 49ers released Smith on August 7 after he was arrested the night before on hit-and-run, driving under the influence and vandalism charges in Santa Clara, California.

It was Smith's fifth arrest since 2012, and he could be subject to NFL discipline in the future, pending the judicial outcome of his latest incident.

The troubled Smith, despite his off-the-field issues, will be eligible to play on Sunday, league sources told ESPN's Adam Schefter. Smith practiced with the team on Friday.

According to ESPN, Smith's one-year deal contains a $1m base salary (around £650,000). He can earn up to $5m (£3.2m) through a $312,500 (£202,500) per-game roster bonus and another $2m (£1.3m) based on his sack total, bringing his potential earnings to $8m (£5.2m).

Smith joins the Raiders after four seasons with the 49ers where he was a bonified star early in his career as he racked up 14 sacks in his rookie season and 19.5 in his second.

The 25-year-old was selected seventh overall in the talent-laden 2011 draft which also included Cam Newton, Von Miller, Marcell Dareus, A.J. Green, Julio Jones, Tyron Smith, J.J. Watt and Robert Quinn among the first 14 picks.

If he can stay clean off the field, Smith could form a potentially lethal pass-rushing duo with emerging Raiders star Khalil Mack who looks poised to break out in his second NFL season.