Millwall look set to add to their squad before this weekend’s League One fixture at Chesterfield.
The Lions lost 2-1 to Nottingham Forest in the second round of the League Cup on Tuesday night and asked if he was confident the squad would be boosted by a new recruit before Saturday, Harris said: "Hopefully, we’re trying hard.
"Hopefully there will be one in before the weekend.
"We’ve got a really good squad of players, a really competitive bunch.
"But we don’t have strength in depth at the moment. I’m thinking one – possibly a second one – but definitely one before the weekend if not next week just to give us that extra little bit of competition and that extra little bit of quality."