Why wait and see if he can? For a club owned by an apparent billionaire, with ambitions of competing with the teams at the top , why should we just wait to see if he does improve even more when we can sign a goalkeeper already towards that level? As i ask, why do we have to settle that Robles is the best we have? He wasn't as bad as Howard so people looked at him favourably, same as now, better than stek, except stek was a back up keeper before he came here anyway so hardly a huge benchmark there to overcome.
Is it just not possible that he isn't a top keeper in the making and we can do better? As for his last 'bad' game, when was the last time he was hammered with shots and kept them all out? when was the last game we were genuinly under the cosh so to speak and relied on Robles to bail us out for large portions of games? Flash back to last season and it was the same then, Robles looked better than howard but didn't face too many shots on his goal in that time neither.
Yeah true no-ones peppered us with shots for a while (hurray). That might be
a) Robles is part of defence that is understanding each other better, now that he FM and Williams have had 6 months together. I think Coleman / Baines return to something like their better form and pressing more is no coincidence now that the back three are operating better.
b) Robles has made outstanding snapshot saves in games we've been 1-0 or level in - that needs concentration and is realistically the best he can do if we're more thrifty in defence.
I'm not his agent btw : ) and you point about investment will always be true. But Billionaire's become that way not by throwing money at every challenge. If the team is progressing as is (Europa looks a possibility) then surely we have other off and on-pitch priorities like the stadium and a deputy/replacement(s) for Rom which need not include Valencia or Bolasie for my money.
We've also still got some pre-Martinez guys who may roll off in the summer when I hope Galloway returns. As such I'd be happy to see a stellar Central defender, Left back cover for Baines, a replacement for Barry in CM and Forward arrive as priorities over a keeper.
Running with your point though mate and Goalie's are vital of course, let's say Robles form stutters before end of season or is injured - and Stek is a concern - who'd be relevant targets? Someone with CL experience who we can have young keepers learn from or a long term pick like Pickford? Would you go fo Hart?