Celtic manager Gordon Strachan says Borussia Monchengladbach midfielder David Degen made a positive impact during his trial in Glasgow.
Borussia have told David Degen to find a new club
The 24-year-old Switzerland international was criticised by Borussia coach Jos Luhukay for being a disruptive influence on team-mates.
But Strachan said: "We will have to sit down and talk about it but the first person to know about it will be David.
"I think he has enjoyed his few days here and we liked what we have seen."
Degen will await news of Strachan's decision in Germany.
"He's away back to his club," said the Celtic manager. "It's good that he can come to see us and we can see him and get to know what we are dealing with.
"It's better that than making a rash decision at the end of July."
Celtic is a massive club with a great tradition and I'm interested in joining
Degen was told to find a new club after just one year of a three-year contract following Borussia's relegation from the Bundesliga.
The former Basel player was delighted with his treatment by Strachan, who is in the recovery stages following a hip operation.
"The welcome I got from Celtic was extraordinary," Degen told the Daily Record.
"The manager is injured, but he still came to see me to say hello.
"This felt outstanding. I'd never been treated that way before.
"Celtic is a massive club with a great tradition and, of course, I'm interested in joining."
Luhukay, who took charge of Borussia in March, last week ordered Degen to train with the club's under-23 side.
"He was lacking concentration, unprofessional and a nuisance factor," the coach was reported as saying.
"He did not show the attitude which you would expect.
"His head has been switched off Borussia and therefore he will train with the under-23 side for the next one-and-a-half weeks, but he will not play.
"His time has run out. He can go if the conditions are correct."