The deal keeps them at Parkside Road with the Northern Premier League Division One North West outfit until January 2021.
Barnes, 18, is a dynamic right-sided player who earned his first professional deal this summer following the successful completion of his scholarship with the club.
Lightfoot, also 18, is a midfielder who converted from central defence during his scholarship with Eric Kinder's youth team.
Keep up-to-date with our exclusive email newsletters.
Subscribe