The 20-year-old has spent this week as a trialist with the Paisley club and has been training with the first-team squad.
Speaking ahead of this weekend's game at Ross County, Lennon said: "He's doing okay, he has shown up particularly well.
"When we see him in a game, we will make that decision on him. He has settled in very well."
Lennon says he could bolster his squad ahead of the transfer deadline but only if the signings improve the options he already has at his disposal.
The Saints boss added: "With the window still being open, there are a lot of phone calls and a lot of emails going back and forward.
"It's important, if anyone comes in, that we make sure it's the right one for us.
"We want to make sure that player is going to add to the good quality of players that we have and one that's going to improve us."
- Sports & Recreation