Our players were very poor against Spurs but Lukaku is really frustrated indeed.
If you don't have technical skills, you are just not top class footballer and any good defenders can exploit the player's technical limitation. Just look at those top class striker out there, Lewandowski, Kane, Suarez, RVP, RVN, Eto'o, Rooney, Benzema they are all strikers with 3-4 times better technique than Lukaku. It's so frustrated because against Lukaku, all you need is as defenders just some muscle, stay tight with him and he will lose the ball. He has also failed to score a single goal against top 6 sides this season.
He's been one of our main problem in fact, we struggle to get the best out of him with our tactic and service and now due to his limitation, we need to spend more money to sign more players with quality service just for him!!
It's like he needs 9/10 rating of service aka Beckham and De Bruyne in order to get the best out of him but we only need 6/10 rating service in order to get the best out of Suarez & RVP aka Cleverley, Welbeck, Valencia, Henderson, Allen.