22-year-old Brazilian attacker Wellington Silva has been with Arsenal since 2010 although the mjaority of the period since then has been spent out on loan in Spain.
His immediate brief will be to bring a cutting edge to a side that has yet to score this season, suffering two league defeats and a Capital One Cup exit and taking a solitary point from a goalless draw against Derby County.
He goes straight into the Bolton squad for the weekend alongside another new arrival, Italian right-back Francesco Pisano who joined the Whites after leaving Cagliari in the summer.
Goals may be at a premium if Forest are again without Michail Antonio, left out of the squad for the midweek stalemate with Charlton Athletic amid talk of a move away from the City Ground.
Dougie Freedman does, however, have new man Kyle Ebecillio in his ranks after the former Arsenal midfielder made a season-long loan switch from FC Twente.
That adds to the positive news that Henri Lansbury looks set to remain at the club with a switch to Burnley now seemingly off the agenda.