Roberto Martínez, the Everton manager, has urged Aaron Lennon to maintain his fine form if the winger on loan from Tottenham wants to make his stay a permanent one.

Lennon scored his second goal for Everton just before half-time, calmly taking a touch before directing James McCarthy’s cross into the bottom corner of Lukasz Fabianski’s net. It was not enough to earn Everton a fourth successive Premier League win, however, Swansea taking a point thanks to Jonjo Shelvey’s second-half penalty after Seamus Coleman had handled under pressure from Marvin Emnes.

Lennon, 27, has impressed since moving to Everton at the end of the winter transfer window and Martínez is thought to be weighing up making a £6m offer for the England international, or arranging a possible swap deal involving Kevin Mirallas.

When asked if Lennon was making an increasingly strong case for a permanent move, Martínez said: “The impressive thing about Aaron is he does not look like a loan player, he looks like he has been playing for Everton for many, many years and that is a very important sign.What we now want is for Aaron is to carry on pushing, carry on enjoying his football, carry on keeping his place in the side and making sure he enjoys his time with Everton.”

Another plus for Martínez was the return of Steven Pienaar after four months out with a knee injury, the South African playing for just over an hour after replacing Leon Osman, who sustained a groin injury. “You see what we have been missing all season,” Martínez said. “Steven has been unavailable for 19 Premier League games and that is an astonishing amount of games to be without a key player.”

For the Swansea manager, Garry Monk, the need to strengthen his attacking resources was underlined by Bafétimbi Gomis’ hamstring injury, which left the home side bereft of striking options. He also has a defensive problem after Neil Taylor’s 10th booking of the season earned the left-back a two-match suspension.

“It’s what we are looking into. We are thin on the ground and adding up front is important, not to replace Bafé but to give us that strength,” Monk said.

Man of the match Jonjo Shelvey (Swansea City)