Rondon is at the very top level of ability we can realistically be expected to sign I think. 12 goals in 40 leagues games to date. 3 in 6 games this season and we all know for certain he'd be getting even more if we were a little more attack minded.
His contract runs till June 2019, so 2 years at the end of the season.
Soon as he gets his 10th goal this season give him a new contract, add a year to it and ensure he's happy.
After prime Odemwingie & end of season Lukaku he's the best Prem striker we've had i think.