Liverpool-bound midfielder Naby Keita picked up his third red card in his last seven Red Bull Leipzig appearances on Wednesday when his team were beaten on penalties by Bayern Munich in the DFB-Pokal Cup, and Reds fans are concerned that the club may have made the wrong decision by signing him.The Merseyside outfit wanted to bring in the 22-year-old during the summer following an outstanding campaign for the Bundesliga outfit, but the German side understandably wanted one of their key men to stay for their Champions League campaign.While the Reds have since agreed a deal to bring the Guinea international to Anfield next summer, his disciplinary record will certainly be a concern given how strict Premier League referees can be.Liverpool supporters were quick to have their say on Keita's latest dismissal via social media, and while some said "we should be worried", others believe he is a "disaster waiting to happen".Here is just a selection of the Twitter reaction...

https://video.footballfancast.com/video-2015/soton-liverpool.mp4