Manchester City midfielder Abdul Razak has already won over his new teammates at Portsmouth.
Razak signed on-loan with Pompey last week.
Blues midfielder Hayden Mullins said: "He's a good player with lots of ability - you can tell why he's at Manchester City.
"He's come down here to get a few first team games and hopefully he can do that and learn his trade. He showed some nice touches and looks like he's going to be a good player for us."