** British budget carrier easyJet EZJ.L rises 10.1% to over a four-year high at 614.6p after agreeing in principle to a sweetened fifth takeover offer from U.S. investment firm Castlelake

** Castlelake's 690p-per-share proposal values easyJet at about £5.5 billion ($7.34 billion) and represents a 73% premium to the stock's May 29 close, when the private equity firm disclosed its interest

** Castlelake has until August 3 to submit a firm offer

** Of 17 analysts covering EZJ, 11 rate it "hold", while three each rate it "buy" or better and "sell" or worse; median PT 525p - LSEG data

** Stock up over 20% YTD

($1 = 0.7494 pounds)