Jackson indicated that he was going to give the 24-year-old, who names Rapid Bucharest among his former clubs, more opportunities to impress.
"He's been to a few other clubs and they've had the same problems so we'll work hard and hopefully sort it out," the Imps boss added.
"He's made an impact but we'll see how he goes on, I'm interested to see him against stronger opposition."
City's other goals in the 3-2 win at Retford came from Danny Hone and Jack Roberts.
