Foster is on-loan at the Hawthorns from Birmingham City.
Foster said: "If a decision can be made soon, then fantastic. I've got nothing but good things to say about Birmingham and the same now about West Brom. I've loved my time here and at Birmingham.
"We've obviously got to come to a decision at the end of the season and I think Birmingham will be the ones who make it.
"The Championship season finishes earlier than the Premier League so I'm sure, come the end of that, a decision will be made one way or the other.
"I've made some very good friends here and it's very similar to Birmingham, it's a very homely, family-orientated club. I'm just enjoying playing football with good people."