It’s a big day for Jacob Mensah this weekend as he prepares to captain Dover against his former club. Whites host Kent rivals Maidstone at Crabble on Saturday (3pm) with Mensah, 23, looking forward to facing his old side. The centre-back had a spell with the Stones in the National League last season and on Monday night watched their 5-0 FA Cup fifth-round defeat at Championship club Coventry. “I’m looking forward to Saturday because it’s nice to see a few familiar faces and also it’s just competitive,” said Mensah, released by ex-Stones boss Hakan Hayrettin shortly before George Elokobi took c…