The Championship outfit have been quite busy in the market so far in the summer transfer window, bringing in as many as seven new players.
Defender Sol Bamba, striker Chris Wood and midfielder Stuart Dallas have joined the Whites from Palermo, Leicester City and Brentford respectively.
Goalkeepers Charlie Horton and Ross Turnbull and forward Lee Erwin have arrived at Elland Road on free transfers.
Leeds have also secured the services of midfielder Tom Adeyemi from Championship rivals Cardiff City on a season-long loan deal.
Cellino has suggested that the summer business may be over for former Premier League side Leeds.
“I think that the secret to a competitive season is to have all involved,” the Italian entrepreneur told BBC Radio Leeds when asked about more signings. “If you have more than 20 or 21 players, then you don’t involve them.”
“I think if we have too many players, then it is very difficult to build a team,” added Cellino.
Leeds have a strong squad in which competition for places in the starting line-up is fierce.
Cellino’s comments about having a small squad and involving everyone makes sense, as it would make sure that the players are ready to step up when they are needed to.
However, if a good player becomes available between now and the end of the summer transfer window, then Leeds should try to sign him.