CHELSEA have fallen away from being title contenders in the past couple of seasons, but a new wave of investment and a bolder approach to blooding youngsters promises to revive the club as challengers to the new “big two”. The FA Cup semi-final victory against Manchester United, taking Chelsea to their third final in four years, was in stark contrast to the opening game of the 2019-20 campaign which saw United thrash a Blues side that had, out of necessity, been built around youth. That 4-0 defeat in August didn’t bode well for Frank Lampard, but over the course of the season, Chelsea have exceeded expectations. Recently, with the transfer ban out of the way, they have been adventurous in the transfer market, securing…