Well there are some very obvious answers to that - Mitrovic, Watkins and Bowen are three right off the top of my head. Although they're probably all 15m+ (also I know Bowen isn't technically an out and out striker but I think 16 goals already qualifies you for the conversation)
fans are often super critical of their own teams players; comes with the territory. Doesn't mean they're right. I know he's maybe had a bit of an inconsistent season, but he's still joint 10th in the scoring charts atm. I don't see how Leeds would ever let him go for less than they paid for him.
Man Britt to Leeds I mean they're gambling with that Prem money in my opinion they're assuming they'll go up with Britt so in 6 months his fee and wages + FFP stuff will not matter as much but he's going to cost them there's no chance we sell cheap or Britt doesn't get a tidy promotion wage home clause from 2nd in the league Leeds.
I'd say 9-10 million I'd be happy with and to be honest take a punt on Shankhill he'd suit our pressing system to a tee. I've got no real sentiment to Britt or Randolph as harsh as it seems for the financial health of the club we do have to cash out on Britt between now and August we have too much tied up in him to let his contract run any further.