New Zealand batsman Jesse Ryder is facing a race against time in order to be fit for the one-day series against England which starts next month.
The hard-hitting batsman is not in the Test squad currently in England after injuring his right hand in a bar celebrating New Zealand's one-day series win at home to England in February.
Ryder damaged an index finger and thumb when he broke a window while trying to get into a toilet which had been locked and then had to undergo surgery.
The 23-year-old made his one-day debut against England and in the five-match series scored 196 runs at an impressive average of 49 as New Zealand won 3-1.
But his injury ruled him out of the subsequent Test campaign where England came from behind to win a three-match series 2-1.
"We are taking it day by day," New Zealand captain Daniel Vettori, speaking on the eve of the second Test at Old Trafford, said of Ryder's injured hand here on Thursday.
"He has just started hitting balls, if he is right he is right, if he is not we are not going to force the issue.
"He quickly became an important part of our side with his performances in the one-dayers back home.
"We want him back as quick as we can but we don't want to push him as the Champions Trophy is coming up and that is pretty important to us. If he is not right he won't tour."
England and New Zealand will start the second Test here Friday with this three-match series level at 0-0 after a drawn opener at Lord's on Monday.