Roy Hodgson insists Scott Carson is not yet his first-choice goalkeeper, despite impressing on his West Brom return.
The 25-year-old was named man-of-the-match after a solid display during Monday night's 1-1 draw with Stoke, which marked his first outing for the Baggies in almost two months.
The former England keeper had been dropped by previous boss Roberto Di Matteo, but Hodgson gave him the nod ahead of Boaz Myhill due to his greater experience.
However, the manager is adamant he is still making his mind up over who will take the gloves in the long-term.
Hodgson said in the Daily Mirror: "All the decisions regarding the players are difficult for me to make at the moment because you don't know the players that well when you've only been working with them for a couple of weeks.
"Obviously, Carson is a good goalkeeper. Myhill is a good goalkeeper. For me, really, to be able to put my hand up and say: 'I'm absolutely convinced that this one is better than the other one', I need to work with them a lot more than two weeks.
"But certainly Carson's performance was very solid. What he had to do he did very, very well.
"He is the more experienced of the two and that was one of the things which prompted me to give him a chance against Stoke.
"I've been very happy with what I've seen, but I defy any manager after working with a team for just two weeks to be categoric about players."