Arsenal manager Mikel Arteta has admitted the club needs to reinforce in a number of positions, but will only do so if they get the right players.
The Spaniard, however, refused to confirm whether or not they had made a bid for Shakhtar Donetsk's Mykola Matviyenko.
The 23-year-old has emerged as a top target to offer some cover at the back, which has been depleted due to long-term injuries to a number of key players.
"I'm not going to be discussing any transfer links publicly," Arteta said in his pre-match press conference ahead of the Bournemouth FA Cup match on Monday.
"It's something we are trying to do internally and when we have news we will communicate with you guys."
"We are looking at different positions, obviously since I joined we lost Calum [Chambers] and we had other circumstances and injuries in that position so it's true that at the back we have been short.
"There are other positions as well, depending on what happens in the market that we might need to assess."
"At the moment I am 50/50 because this transfer [window] is very complicated and I only want to bring somebody in if I'm convinced he can really improve the level that we have."
Atletico Madrid's Thomas Lemar has become the latest player to be linked with the Gunners, with reports indicating they are leading the race for the 24-year-olds.
Arsenal will travel to face Bournemouth on Monday night in the fourth round of the FA Cup tie.