Count me in for Leicester to break into CL/Europa !!
Its still early to predict but I am kinda rooting for them. I think they might make for CL considering Arsenal, Spurs and Man U keeps performing like this. TBH watching their game and the way they are attacking seems past the level of quality of Man Utd and Spurs as for now. They are good in breaking into opponent defense and are good in capitalizing chances as well.
The thing about Leicester is that they are playing excellent football, the way they pass and press as well as counter-attack and defend. It would be an injustice if they did not qualify for the Europa League at the very least.
The three teams you named (Manchester United, Arsenal and Tottenham) have a serious chance of not qualifying for the any European competition this season. I would say that on current form Chelsea are almost guaranteed to join Liverpool and Manchester City for the Champions League. That leaves Leicester fighting it out with anybody near them to that 4th place and I just cannot see those 3 teams getting close on current form.
That's true , those people who watch them playing would find it's so entertaining with the good football they shows to us , it's just like watching your own favorite team now ... as believe me everyone expecting Leicester to do the same magic thing just like what they did in 2015/2016 campaign to win the epl!
They are on superb form along with chelsea who has 5 winning streaks , can't see any reason why they won't finished at the top 7.
Horrible tackle made by son , andre Gomes suffered a horror leg injury ... wish the very best for him to recover from this. I can't see the video anymore , it's too horrific damn.
I knew tottenham would win this game , until son being sent off and there's gomes leg injury which provide 12 minutes added time and cenk tosun successfully score an equaliser goal at 90+7' ... crazy game
. Look at Manchester city who nearly lost to Southampton, the odds was really terrible @1.12 I think for Manchester city moneyline and also the same thing to liverpool odds @1.3 who left behind to Aston villa until a dramatic comeback that finally save them from the loss. 
