Imps goalkeeper Sam Long has joined Gainsborough Trinity on loan until January.
The 18-year-old made his competitive City debut in the 3-2 Papa John's Trophy win over Manchester United U21s, before keeping his first clean sheet in the 3-0 win at Bradford City.
Director of football Jez George said: “As we’ve said previously, we always intended Sam to go out on loan this season so that he can experience men’s football and play regularly.
"It was fantastic for Sam to make his first team debut, play in all three of this season’s Papa John’s Trophy group matches and experience the first team matchday environment over the past 10 months, but now that Archie Mair has joined us on loan from Norwich it enables Sam to get a run of games at a challenging level.
"We will review the arrangement in January and then decide what is best for Sam’s ongoing development for the remainder of the season.”