Winger Sammy Ameobi has joined Nottingham Forest on a one-year deal after his departure from Bolton.
The 27-year-old was out of contract after leaving Wanderers following their relegation to League One.
Ameobi, who started his career at his hometown club Newcastle, also had a loan spell at Middlesbrough in 2013 and spent a season with Cardiff in 2015-16.
Meanwhile, striker Apostolos Vellios has joined Greek side Atromitos for an undisclosed fee.
Vellios scored eight goals in 45 appearances during his three years with the Championship club.
Find all the latest football transfers on our dedicated page.