49ers DE Tarron Jackson hospitalized
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Allen originally was signed as an undrafted free agent by the Denver Broncos last year, but they released him with an injury settlement, and eventually signed with the Memphis Showboats of the UFL, where he played in 10 games, started nine, record two sacks and 27 tackles, according to The Football Database. So, he's a camp body.
A former standout at Coastal Carolina was reportedly taken away by an ambulance after he got hurt at an NFL training camp practice this past weekend.