By Tom Gott Tottenham Hotspur get their Europa League campaign underway on Thursday with a visit from Azerbaijani giants Qarabag. A regular on the European stage, Qarabag have clashed with English opposition on six occasions since 2015, but have fallen short every time, including against Spurs in the group stage of this competition in 2015/16. They may be clear underdogs heading into this one, but Qarabag can be a dangerous outfit on their day. Here are four key players Spurs must be wary of. 1. JuninhoQarabag’s star player is 27-year-old striker Juninho, who netted 31 goals in all competition…