LIVERPOOL -- Roberto Martinez said he has no worries about fan trouble when his Everton side face Dynamo Kiev in the Europa League last 16, even though the club advised fans to wait before purchasing travel arrangements.
The Ukrainian Premier League leaders are being investigated by UEFA after violent scenes marred their round of 32 second leg victory over Guingamp in Kiev on Thursday.
Reports have suggested that the NSC Olimpiyskiy Stadium match on March 19 could be played behind closed doors as a result of the trouble, which forced the referee to suspend play for 15 minutes.
The disciplinary case is set to be dealt with by UEFA next Wednesday and as a result Everton are urging fans to hold fire making any bookings until at least March 2. A statement from the club read: "Everton is advising any supporters considering booking travel to Kiev to wait until our official allocation, and the ticketing criteria, have been confirmed. This is likely to be early next week.
"We are also aware of the discussions between Dynamo and UEFA over safety and security matters following the incidents in the stadium during the round-of-32 fixture against Guingamp and will provide any updates on this as soon as possible."
Everton will play the first leg at home, on March 12, and manager Martinez said that the club's fans shouldn't worry.
He said: "Well, at the moment, as you know, there's a UEFA investigation going on, and we don't know any more details from that point of view.
"We're playing the first leg at Goodison, and we're going to take every step as it comes. We'll wait for instructions.
"I don't think there's anything to worry about at this stage for any of our fans. At the moment, it's just a case of concentrating on the first leg, and seeing how the investigation goes on with UEFA."
Dynamo Kiev are unbeaten in their domestic league this season after 14 matches, and Martinez expects a challenge on the pitch.
He said: "It's a draw that we're very, very excited about, because Dynamo Kiev are a top team.
"They are unbeaten in their domestic league. That lead that league ahead of teams we know very well, who are very strong in Europe, such as Shakhtar Donetsk and Dnipro.
"They've got some well-known players such as Andriy Yarmolenko, Jeremain Lens, Younes Belhanda, and they play in a phenomenal facility. The ground is special.
"It's what we expected -- a tough team. In the draw, you always prefer to play at home in the second leg. Unfortunately, that's not going to be the case, but there's nothing we can do in that respect, so we'll leave that on the side."
Martinez, meanwhile, is confident that England Under-21 left-back Luke Garbutt will stay at Everton beyond the summer.
The 21-year-old, who played in both legs of the Europa League round of 32 victory over Swiss side Young Boys, is out of contract in July.
Garbutt is arguably third in the pecking order for the left-back position, behind Leighton Baines and Bryan Oviedo.
But Martinez believes that the defender, who has gained experience during loan spells in the lower divisions with Cheltenham and Colchester, has a long-term Everton future.
The manager said: "Luke has been at the club since the age of 16. In the last 16 months, we've spent a lot of time putting together a plan to give him a path to develop.
"He's taken advantage of that, going out on loan, coming back and starting to get involved in certain games.
"I do feel that a player such as Luke is going to stay with us for the long term, but that's not my concern.
"My only concern is to see Luke Garbutt fight for his place and get him ready to make sure that every time he's on the pitch, he helps the side.
"Whatever happens in the future, I'm sure it's going to be good for both parties."