West Brom have agreed a deal with Arsenal to take Ainsley Maitland-Niles on loan for the rest of the season.
The Baggies have been chasing the England international to help their battle against Premier League relegation.
They are 19th in the table ahead of Tuesday's trip to rock-bottom Sheffield United and have also completed the loan of Turkey midfielder Okay Yokuslu from Celta Vigo.
Boss Sam Allardyce said: 'We have until 11pm, I think we will try between now and 11pm to try to find two more players who are available.