Aston Villa defenders Nathan Baker and Eric Lichaj have extended their loan spells at Lincoln until the new year.
The duo, who signed initial one-month deals in late October, will remain at Sincil Bank until January 2 but will not be allowed to play in the FA Cup for the League Two side.
England Under-19 international centre-half Baker, 18, has played three times since his move.
American full-back Lichaj has featured just twice after the 20-year-old was sent off in the defeat at Morecambe.
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