England manager Roy Hodgson accepts none of his strikers have made an indisputable case to lead the line in the knockout stage of Euro 2016.
Hodgson brought five finishers to France, augmented by wide forwards Adam Lallana and Raheem Sterling, but has yet to find the best combination up front.
England created a tournament high of 65 chances in Group B, but converted only three of those and had to settle for second place behind their more clinical Welsh neighbours.
Lallana started all three matches but has yet to register his first international goal, while Kane and Sterling began in the side before making way for Jamie Vardy and Daniel Sturridge.
The latter pair were effective off the bench against Wales, both scoring in a stirring second half comeback, but less so in the stalemate with Slovakia.
To further muddy the waters, record scorer Wayne Rooney has been converted into a midfielder and 18-year-old Marcus Rashford remains something of a wild card.
“I certainly would have had a few regrets if I’d given Kyle Walker or Danny Rose, who’ve worked unbelievably hard and have an important role to play for us, another game on the bounce and they’d got injured: that would have been something to regret.
“That could also be a headache we have to deal with because all of them have shown a lot of qualities in the games but none of them, as yet, have really shown they are able to score the goals we need,” admitted Hodgson.
“We will have the headache of trying to decide which strike force we’re going to use.
“I thought Lallana, Sterling and Kane did very well against Russia.”