By Ewan Murray The FA Cup third round did produce some interesting match-ups but it lacked a little of the competition’s fabled magic. However, the fourth round has some more intriguing ties, several of which will be played this Friday under the lights. There will be two gargantuan battles to set up the weekend, including Manchester City’s trip to eight-time winners Tottenham Hotspur and Chelsea’s mouth-watering encounter with high-flying Aston Villa. Here is your guide to all four of Friday’s FA Cup fixtures. Sheffield Wednesday vs Coventry CityLocation: Sheffield, EnglandStadium: Hillsboroug…