Everton have reportedly put an £80m price tag on young prospect Richarlison’s head amid interest from a number of top-flight clubs across the continent. The 21-year-old Brazilian has impressed with the Toffees this term by scoring 10 goals in 23 Premier League appearances this season. Everton raised eyebrows when paying Watford £40m to sign Richarlison less than a year ago, but the Merseyside outfit believe that his valuation has now doubled after six months at Goodison Park. The Daily Star…