But a loan for Sunderland striker Ryan Noble has cooled, with the striker not keen on a temporary move to Victoria Park.
Adjei, 20, played for Pools' reserves on Wednesday and has been training with Pools ahead of a likely summer release from St James' Park after three
Cooper, who will give Gary Liddle every chance to be fit for tomorrow's game at Wycombe after being forced off with a calf injury last weekend, said:
"Sammi has been in training with us, he looked sharp and quick, we may follow it up and he's been in a couple of weeks now.
"He's had problems with his hamstrings, but it fit and strong so we will look at that.''
He added: "Sami's problem is that through injury he's hardly played football for three years because of hamstring troubles. But he's looked fit and been bright, he did OK in a poor reserve team
"He's a pleasure to have with us and has done well, it's one we may look at but it's down to Newcastle. They have been great with us and he's come in and enjoyed it.
"I've looked again of late, but if I take someone, where do I play them? A lot of clubs say they have to play when they come and it's hard to change at the moment.
"We look and continue to look and if it will benefit we will bring them in.''
And Cooper's attacking options could also be boosted in the coming weeks, with the return of James Poole after a hamstring strain kept him out since Boxing Day.
The Pools boss is still looking to boost his squad and admitted: "The bonus this week is that James Poole has been training, a big bonus and like a new signing if he's fit as I've not seen him.
"Ryan Noble, we were keen, but I don't know how keen the lad was. Anyone who comes has to want to come.
"We are still looking to bring in. It's hard to bring in when the team is going well like they are, but we need strength in depth with the amount of games to come.
"We speak to clubs and see what is available.''